18107975 has 24 divisors (see below), whose sum is σ = 24025248. Its totient is φ = 13491200.

The previous prime is 18107959. The next prime is 18107981. The reversal of 18107975 is 57970181.

It is not a de Polignac number, because 18107975 - 2⁴ = 18107959 is a prime.

It is a Duffinian number.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 58070 + ... + 58380.

It is an arithmetic number, because the mean of its divisors is an integer number (1001052).

Almost surely, 2^18107975 is an apocalyptic number.

18107975 is a deficient number, since it is larger than the sum of its proper divisors (5917273).

18107975 is a wasteful number, since it uses less digits than its factorization.

18107975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 18107975 is about 4255.3466368793. The cubic root of 18107975 is about 262.5971220358.

The spelling of 18107975 in words is "eighteen million, one hundred seven thousand, nine hundred seventy-five".