18108875 has 16 divisors (see below), whose sum is σ = 22724832. Its totient is φ = 14407200.

The previous prime is 18108841. The next prime is 18108907. The reversal of 18108875 is 57880181.

It is a de Polignac number, because none of the positive numbers 2^k-18108875 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34364 + ... + 34886.

It is an arithmetic number, because the mean of its divisors is an integer number (1420302).

Almost surely, 2^18108875 is an apocalyptic number.

18108875 is a deficient number, since it is larger than the sum of its proper divisors (4615957).

18108875 is an equidigital number, since it uses as much as digits as its factorization.

18108875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 38.

The square root of 18108875 is about 4255.4523848822. The cubic root of 18108875 is about 262.6014724854.

The spelling of 18108875 in words is "eighteen million, one hundred eight thousand, eight hundred seventy-five".