18081490980 has 288 divisors, whose sum is σ = 62707478400. Its totient is φ = 3870332928.

The previous prime is 18081490949. The next prime is 18081491003. The reversal of 18081490980 is 8909418081.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4969722 + ... + 4973358.

It is an arithmetic number, because the mean of its divisors is an integer number (217734300).

Almost surely, 2^18081490980 is an apocalyptic number.

18081490980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18081490980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31353739200).

18081490980 is an abundant number, since it is smaller than the sum of its proper divisors (44625987420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18081490980 is a wasteful number, since it uses less digits than its factorization.

18081490980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 48.

The spelling of 18081490980 in words is "eighteen billion, eighty-one million, four hundred ninety thousand, nine hundred eighty".