18330864 has 40 divisors (see below), whose sum is σ = 47510352. Its totient is φ = 6090240.

The previous prime is 18330859. The next prime is 18330881. The reversal of 18330864 is 46803381.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 24642 + ... + 25374.

Almost surely, 2^18330864 is an apocalyptic number.

It is an amenable number.

18330864 is an abundant number, since it is smaller than the sum of its proper divisors (29179488).

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

18330864 is a wasteful number, since it uses less digits than its factorization.

18330864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 18330864 is about 4281.4558271691. The cubic root of 18330864 is about 263.6701573947.

The spelling of 18330864 in words is "eighteen million, three hundred thirty thousand, eight hundred sixty-four".