18229374 has 28 divisors (see below), whose sum is σ = 41000616. Its totient is φ = 6075972.

The previous prime is 18229369. The next prime is 18229381. The reversal of 18229374 is 47392281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 4794 + ... + 7709.

Almost surely, 2^18229374 is an apocalyptic number.

18229374 is an abundant number, since it is smaller than the sum of its proper divisors (22771242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18229374 is an equidigital number, since it uses as much as digits as its factorization.

18229374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12523 (or 12508 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 18229374 is about 4269.5870994746. The cubic root of 18229374 is about 263.1826476829.

The spelling of 18229374 in words is "eighteen million, two hundred twenty-nine thousand, three hundred seventy-four".