18005375 has 16 divisors (see below), whose sum is σ = 23250240. Its totient is φ = 13904800.

The previous prime is 18005357. The next prime is 18005381. The reversal of 18005375 is 57350081.

It is not a de Polignac number, because 18005375 - 2²⁴ = 1228159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1142 + ... + 6108.

It is an arithmetic number, because the mean of its divisors is an integer number (1453140).

Almost surely, 2^18005375 is an apocalyptic number.

18005375 is a deficient number, since it is larger than the sum of its proper divisors (5244865).

18005375 is an equidigital number, since it uses as much as digits as its factorization.

18005375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011 (or 5001 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 18005375 is about 4243.2740896624. The cubic root of 18005375 is about 262.1002229081.

The spelling of 18005375 in words is "eighteen million, five thousand, three hundred seventy-five".