18038875 has 8 divisors (see below), whose sum is σ = 22512672. Its totient is φ = 14431000.

The previous prime is 18038861. The next prime is 18038897. The reversal of 18038875 is 57883081.

It is not a de Polignac number, because 18038875 - 2⁵ = 18038843 is a prime.

It is a super-2 number, since 2×18038875² = 650802022531250, which contains 22 as substring.

It is a Duffinian 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, 72031 + ... + 72280.

It is an arithmetic number, because the mean of its divisors is an integer number (2814084).

Almost surely, 2^18038875 is an apocalyptic number.

18038875 is a deficient number, since it is larger than the sum of its proper divisors (4473797).

18038875 is an equidigital number, since it uses as much as digits as its factorization.

18038875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144326 (or 144316 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 18038875 is about 4247.2196788017. The cubic root of 18038875 is about 262.2626728736.

The spelling of 18038875 in words is "eighteen million, thirty-eight thousand, eight hundred seventy-five".