18494004 has 24 divisors (see below), whose sum is σ = 43243648. Its totient is φ = 6151680.

The previous prime is 18493997. The next prime is 18494033. The reversal of 18494004 is 40049481.

It is a congruent number.

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, 5589 + ... + 8259.

Almost surely, 2^18494004 is an apocalyptic number.

It is an amenable number.

18494004 is an abundant number, since it is smaller than the sum of its proper divisors (24749644).

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

18494004 is a wasteful number, since it uses less digits than its factorization.

18494004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255 (or 3253 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18494004 is about 4300.4655561927. The cubic root of 18494004 is about 264.4500473251.

The spelling of 18494004 in words is "eighteen million, four hundred ninety-four thousand, four".