The Number

1800

One Thousand Eight Hundred

In Base 18 Octodecimal Is

5a018

The numbers with a 18 subscript use Base 18 Octodecimal notation.

For more familiar numbers: See One Thousand Eight Hundred in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

1797
59f18
One Thousand Seven Hundred and Ninety-Seven in Base 18 Octodecimal
1798
59g18
One Thousand Seven Hundred and Ninety-Eight in Base 18 Octodecimal
1799
59h18
One Thousand Seven Hundred and Ninety-Nine in Base 18 Octodecimal
1801
5a118
One Thousand Eight Hundred and One in Base 18 Octodecimal
1802
5a218
One Thousand Eight Hundred and Two in Base 18 Octodecimal
1803
5a318
One Thousand Eight Hundred and Three in Base 18 Octodecimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1.800e3

Reciprocal

A number multiplied with its reciprocal is one.

0.00345dc45dc45dc18

The reciprocal of 1800 in Base 18 Octodecimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 5a018 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

One thousand eight hundred is a composite number with 36 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

One thousand eight hundred is a composite number with 36 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number one thousand eight hundred has the following 3 prime factors:

2
218
Two in Base 18 Octodecimal
3
318
Three in Base 18 Octodecimal
5
518
Five in Base 18 Octodecimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

2183 · 3182 · 5182 = 5a018

Base Conversions

The number one thousand eight hundred in 35 different bases