The Number
19981
Nineteen Thousand Nine Hundred and Eighty-One
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.
1.9981e4
Reciprocal
A number multiplied with its reciprocal is one.
0.00005004754516790951
The reciprocal of 19981.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 19981 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Nineteen thousand nine hundred and eighty-one is a composite number with 8 total factors (including 1 and itself). See primes in Base 10 Decimal
A Composite
Composites have more than just these two factors.
Nineteen thousand nine hundred and eighty-one is a composite number with 8 total factors (including 1 and itself).
Prime Factors
The number nineteen thousand nine hundred and eighty-one has the following 3 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
131
·
291
·
531
= 19981
Base Conversions
The number nineteen thousand nine hundred and eighty-one in 35 different bases