18257580660 has 96 divisors (see below), whose sum is σ = 56280470400. Its totient is φ = 4385456640.

The previous prime is 18257580659. The next prime is 18257580673. The reversal of 18257580660 is 6608575281.

It is a super-4 number, since 4×18257580660⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54955 + ... + 198834.

It is an arithmetic number, because the mean of its divisors is an integer number (586254900).

Almost surely, 2^18257580660 is an apocalyptic number.

18257580660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18257580660 is an abundant number, since it is smaller than the sum of its proper divisors (38022889740).

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

18257580660 is a wasteful number, since it uses less digits than its factorization.

18257580660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253921 (or 253919 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 18257580660 in words is "eighteen billion, two hundred fifty-seven million, five hundred eighty thousand, six hundred sixty".