18465875 has 8 divisors (see below), whose sum is σ = 23045568. Its totient is φ = 14772600.

The previous prime is 18465871. The next prime is 18465899. The reversal of 18465875 is 57856481.

It is a happy number.

It is not a de Polignac number, because 18465875 - 2² = 18465871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18465871) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73739 + ... + 73988.

It is an arithmetic number, because the mean of its divisors is an integer number (2880696).

Almost surely, 2^18465875 is an apocalyptic number.

18465875 is a deficient number, since it is larger than the sum of its proper divisors (4579693).

18465875 is an equidigital number, since it uses as much as digits as its factorization.

18465875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147742 (or 147732 counting only the distinct ones).

The product of its digits is 268800, while the sum is 44.

The square root of 18465875 is about 4297.1938518061. The cubic root of 18465875 is about 264.3159049305.

The spelling of 18465875 in words is "eighteen million, four hundred sixty-five thousand, eight hundred seventy-five".