The Number
161990
One Hundred and Sixty-One Thousand Nine Hundred and Ninety
In Base 18 Octodecimal Is
19dh818
The numbers with a 18 subscript use Base 18 Octodecimal notation.
For more familiar numbers: See One Hundred and Sixty-One Thousand Nine Hundred and Ninety in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
1.61990e5
Reciprocal
A number multiplied with its reciprocal is one.
0.0000bbh6bbd0ffgd618
The reciprocal of 161990 in Base 18 Octodecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 19dh818 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
One hundred and sixty-one thousand nine hundred and ninety is a composite number with 16 total factors (including 1 and itself). See primes in Base 18 Octodecimal
A Composite
Composites have more than just these two factors.
One hundred and sixty-one thousand nine hundred and ninety is a composite number with 16 total factors (including 1 and itself).
Prime Factors
The number one hundred and sixty-one thousand nine hundred and ninety has the following 4 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
2181
·
5181
·
57181
·
95181
= 19dh818
Base Conversions
The number one hundred and sixty-one thousand nine hundred and ninety in 35 different bases