18307167372 has 60 divisors (see below), whose sum is σ = 51539990656. Its totient is φ = 5632973280.

The previous prime is 18307167371. The next prime is 18307167391. The reversal of 18307167372 is 27376170381.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18307167371) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 2169004 + ... + 2177427.

Almost surely, 2^18307167372 is an apocalyptic number.

18307167372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18307167372 is an abundant number, since it is smaller than the sum of its proper divisors (33232823284).

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

18307167372 is a wasteful number, since it uses less digits than its factorization.

18307167372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346460 (or 4346449 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 18307167372 in words is "eighteen billion, three hundred seven million, one hundred sixty-seven thousand, three hundred seventy-two".