18044044 has 12 divisors (see below), whose sum is σ = 32095168. Its totient is φ = 8874000.

The previous prime is 18044041. The next prime is 18044051. The reversal of 18044044 is 44044081.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18044041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36732 + ... + 37219.

Almost surely, 2^18044044 is an apocalyptic number.

It is an amenable number.

18044044 is a deficient number, since it is larger than the sum of its proper divisors (14051124).

18044044 is a wasteful number, since it uses less digits than its factorization.

18044044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74016 (or 74014 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 18044044 is about 4247.8281509496. The cubic root of 18044044 is about 262.2877207455.

The spelling of 18044044 in words is "eighteen million, forty-four thousand, forty-four".