18385690316 has 24 divisors (see below), whose sum is σ = 36810676896. Its totient is φ = 7871160960.

The previous prime is 18385690277. The next prime is 18385690319. The reversal of 18385690316 is 61309658381.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18385690319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324155 + ... + 376626.

It is an arithmetic number, because the mean of its divisors is an integer number (1533778204).

Almost surely, 2^18385690316 is an apocalyptic number.

It is an amenable number.

18385690316 is an abundant number, since it is smaller than the sum of its proper divisors (18424986580).

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

18385690316 is a wasteful number, since it uses less digits than its factorization.

18385690316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701729 (or 701727 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 18385690316 in words is "eighteen billion, three hundred eighty-five million, six hundred ninety thousand, three hundred sixteen".