18213875 has 16 divisors (see below), whose sum is σ = 23930400. Its totient is φ = 13802400.

The previous prime is 18213859. The next prime is 18213887. The reversal of 18213875 is 57831281.

It is not a de Polignac number, because 18213875 - 2⁴ = 18213859 is a prime.

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, 1460 + ... + 6209.

It is an arithmetic number, because the mean of its divisors is an integer number (1495650).

Almost surely, 2^18213875 is an apocalyptic number.

18213875 is a deficient number, since it is larger than the sum of its proper divisors (5716525).

18213875 is an equidigital number, since it uses as much as digits as its factorization.

18213875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703 (or 7693 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 18213875 is about 4267.7716668069. The cubic root of 18213875 is about 263.1080387131.

The spelling of 18213875 in words is "eighteen million, two hundred thirteen thousand, eight hundred seventy-five".