18442075 has 6 divisors (see below), whose sum is σ = 22868204. Its totient is φ = 14753640.

The previous prime is 18442013. The next prime is 18442097. The reversal of 18442075 is 57024481.

It is a de Polignac number, because none of the positive numbers 2^k-18442075 is a prime.

It is a super-2 number, since 2×18442075² = 680220260611250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 368817 + ... + 368866.

Almost surely, 2^18442075 is an apocalyptic number.

18442075 is a deficient number, since it is larger than the sum of its proper divisors (4426129).

18442075 is an equidigital number, since it uses as much as digits as its factorization.

18442075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737693 (or 737688 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 18442075 is about 4294.4237098824. The cubic root of 18442075 is about 264.2023003653.

The spelling of 18442075 in words is "eighteen million, four hundred forty-two thousand, seventy-five".