18464994 has 24 divisors (see below), whose sum is σ = 40687920. Its totient is φ = 6050328.

The previous prime is 18464989. The next prime is 18465001. The reversal of 18464994 is 49946481.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7632 + ... + 9755.

It is an arithmetic number, because the mean of its divisors is an integer number (1695330).

Almost surely, 2^18464994 is an apocalyptic number.

18464994 is an abundant number, since it is smaller than the sum of its proper divisors (22222926).

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

18464994 is a wasteful number, since it uses less digits than its factorization.

18464994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17454 (or 17451 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 18464994 is about 4297.0913418265. The cubic root of 18464994 is about 264.3117013926.

The spelling of 18464994 in words is "eighteen million, four hundred sixty-four thousand, nine hundred ninety-four".