18530664 has 32 divisors (see below), whose sum is σ = 46440000. Its totient is φ = 6161792.

The previous prime is 18530639. The next prime is 18530671. The reversal of 18530664 is 46603581.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13732 + ... + 15020.

It is an arithmetic number, because the mean of its divisors is an integer number (1451250).

Almost surely, 2^18530664 is an apocalyptic number.

It is an amenable number.

18530664 is an abundant number, since it is smaller than the sum of its proper divisors (27909336).

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

18530664 is a wasteful number, since it uses less digits than its factorization.

18530664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897 (or 1893 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 18530664 is about 4304.7257752382. The cubic root of 18530664 is about 264.6246686048.

The spelling of 18530664 in words is "eighteen million, five hundred thirty thousand, six hundred sixty-four".