18329664 has 28 divisors (see below), whose sum is σ = 48497744. Its totient is φ = 6109824.

The previous prime is 18329629. The next prime is 18329677. The reversal of 18329664 is 46692381.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47542 + ... + 47925.

Almost surely, 2^18329664 is an apocalyptic number.

It is an amenable number.

18329664 is an abundant number, since it is smaller than the sum of its proper divisors (30168080).

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

18329664 is an equidigital number, since it uses as much as digits as its factorization.

18329664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95482 (or 95472 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 18329664 is about 4281.3156856275. The cubic root of 18329664 is about 263.6644036907.

The spelling of 18329664 in words is "eighteen million, three hundred twenty-nine thousand, six hundred sixty-four".