18440804 has 12 divisors (see below), whose sum is σ = 32818800. Its totient is φ = 9064008.

The previous prime is 18440791. The next prime is 18440813. The reversal of 18440804 is 40804481.

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, 38834 + ... + 39305.

It is an arithmetic number, because the mean of its divisors is an integer number (2734900).

Almost surely, 2^18440804 is an apocalyptic number.

It is an amenable number.

18440804 is a deficient number, since it is larger than the sum of its proper divisors (14377996).

18440804 is a wasteful number, since it uses less digits than its factorization.

18440804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78202 (or 78200 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 18440804 is about 4294.2757247294. The cubic root of 18440804 is about 264.1962307511.

The spelling of 18440804 in words is "eighteen million, four hundred forty thousand, eight hundred four".