18314564 has 12 divisors (see below), whose sum is σ = 32230800. Its totient is φ = 9105768.

The previous prime is 18314563. The next prime is 18314581. The reversal of 18314564 is 46541381.

It is a self number, because there is not a number n which added to its sum of digits gives 18314564.

It is not an unprimeable number, because it can be changed into a prime (18314563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12074 + ... + 13505.

It is an arithmetic number, because the mean of its divisors is an integer number (2685900).

Almost surely, 2^18314564 is an apocalyptic number.

It is an amenable number.

18314564 is a deficient number, since it is larger than the sum of its proper divisors (13916236).

18314564 is a wasteful number, since it uses less digits than its factorization.

18314564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25762 (or 25760 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 18314564 is about 4279.5518456960. The cubic root of 18314564 is about 263.5919814454.

The spelling of 18314564 in words is "eighteen million, three hundred fourteen thousand, five hundred sixty-four".