18506464 has 12 divisors (see below), whose sum is σ = 36434664. Its totient is φ = 9253216.

The previous prime is 18506459. The next prime is 18506479. The reversal of 18506464 is 46460581.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289132 + ... + 289195.

It is an arithmetic number, because the mean of its divisors is an integer number (3036222).

Almost surely, 2^18506464 is an apocalyptic number.

It is an amenable number.

18506464 is a deficient number, since it is larger than the sum of its proper divisors (17928200).

18506464 is an equidigital number, since it uses as much as digits as its factorization.

18506464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578337 (or 578329 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 18506464 is about 4301.9139926317. The cubic root of 18506464 is about 264.5094234680.

The spelling of 18506464 in words is "eighteen million, five hundred six thousand, four hundred sixty-four".