18044575 has 6 divisors (see below), whose sum is σ = 22375304. Its totient is φ = 14435640.

The previous prime is 18044561. The next prime is 18044597. The reversal of 18044575 is 57544081.

It is not a de Polignac number, because 18044575 - 2⁷ = 18044447 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 18044575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360867 + ... + 360916.

Almost surely, 2^18044575 is an apocalyptic number.

18044575 is a deficient number, since it is larger than the sum of its proper divisors (4330729).

18044575 is an equidigital number, since it uses as much as digits as its factorization.

18044575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721793 (or 721788 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 18044575 is about 4247.8906530183. The cubic root of 18044575 is about 262.2902935873.

The spelling of 18044575 in words is "eighteen million, forty-four thousand, five hundred seventy-five".