18372074 has 16 divisors (see below), whose sum is σ = 31746048. Its totient is φ = 7810992.

The previous prime is 18372073. The next prime is 18372083. The reversal of 18372074 is 47027381.

It is a happy number.

It is a super-2 number, since 2×18372074² = 675066206122952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18372074.

It is not an unprimeable number, because it can be changed into a prime (18372071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3389 + ... + 6944.

It is an arithmetic number, because the mean of its divisors is an integer number (1984128).

Almost surely, 2^18372074 is an apocalyptic number.

18372074 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18372074 is a deficient number, since it is larger than the sum of its proper divisors (13373974).

18372074 is a wasteful number, since it uses less digits than its factorization.

18372074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10469.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 18372074 is about 4286.2657407118. The cubic root of 18372074 is about 263.8675969837.

The spelling of 18372074 in words is "eighteen million, three hundred seventy-two thousand, seventy-four".