18044379 has 6 divisors (see below), whose sum is σ = 26064116. Its totient is φ = 12029580.

The previous prime is 18044353. The next prime is 18044399. The reversal of 18044379 is 97344081.

It is a happy number.

It is not a de Polignac number, because 18044379 - 2⁹ = 18043867 is a prime.

It is a super-2 number, since 2×18044379² = 651199226991282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18044309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1002457 + ... + 1002474.

Almost surely, 2^18044379 is an apocalyptic number.

18044379 is a deficient number, since it is larger than the sum of its proper divisors (8019737).

18044379 is a wasteful number, since it uses less digits than its factorization.

18044379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004937 (or 2004934 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 18044379 is about 4247.8675826819. The cubic root of 18044379 is about 262.2893439190.

The spelling of 18044379 in words is "eighteen million, forty-four thousand, three hundred seventy-nine".