18563490316 has 12 divisors (see below), whose sum is σ = 37126980688. Its totient is φ = 7955781552.

The previous prime is 18563490259. The next prime is 18563490347. The reversal of 18563490316 is 61309436581.

18563490316 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 331490871 + ... + 331490926.

Almost surely, 2^18563490316 is an apocalyptic number.

It is an amenable number.

18563490316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18563490316 is a wasteful number, since it uses less digits than its factorization.

18563490316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662981808 (or 662981806 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 18563490316 in words is "eighteen billion, five hundred sixty-three million, four hundred ninety thousand, three hundred sixteen".