The Number

18

Eightteen

In Base 19 Nonadecimal Is

i19

The numbers with a 19 subscript use Base 19 Nonadecimal notation.

For more familiar numbers: See Eightteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

15
f19
Fifteen in Base 19 Nonadecimal
16
g19
Sixteen in Base 19 Nonadecimal
17
h19
Seventeen in Base 19 Nonadecimal
19
1019
Nineteen in Base 19 Nonadecimal
20
1119
Twenty in Base 19 Nonadecimal
21
1219
Twenty-One in Base 19 Nonadecimal

Scientific Notation

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

1.8e1

Reciprocal

A number multiplied with its reciprocal is one.

0.111111111111119

The reciprocal of 18 in Base 19 Nonadecimal.

Palindrome?

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

The number i19 is a palindrome.

Not A Prime Number

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

Eightteen is a composite number with 6 total factors (including 1 and itself).   See primes in Base 19 Nonadecimal

A Composite

Composites have more than just these two factors.

Eightteen is a composite number with 6 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 eightteen has the following 2 prime factors:

2
219
Two in Base 19 Nonadecimal
3
319
Three in Base 19 Nonadecimal

Prime Factorization

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

2191 · 3192 = i19

Base Conversions

The number eightteen in 35 different bases