18890982660 has 48 divisors (see below), whose sum is σ = 57703367232. Its totient is φ = 4579632000.

The previous prime is 18890982659. The next prime is 18890982727. The reversal of 18890982660 is 6628909881.

It is a self number, because there is not a number n which added to its sum of digits gives 18890982660.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14310691 + ... + 14312010.

It is an arithmetic number, because the mean of its divisors is an integer number (1202153484).

Almost surely, 2^18890982660 is an apocalyptic number.

18890982660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18890982660 is an abundant number, since it is smaller than the sum of its proper divisors (38812384572).

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

18890982660 is a wasteful number, since it uses less digits than its factorization.

18890982660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28622724 (or 28622722 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The spelling of 18890982660 in words is "eighteen billion, eight hundred ninety million, nine hundred eighty-two thousand, six hundred sixty".