18097444 has 12 divisors (see below), whose sum is σ = 32344704. Its totient is φ = 8856104.

The previous prime is 18097439. The next prime is 18097493. The reversal of 18097444 is 44479081.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47944 + ... + 48319.

It is an arithmetic number, because the mean of its divisors is an integer number (2695392).

Almost surely, 2^18097444 is an apocalyptic number.

It is an amenable number.

18097444 is a deficient number, since it is larger than the sum of its proper divisors (14247260).

18097444 is a wasteful number, since it uses less digits than its factorization.

18097444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96314 (or 96312 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 18097444 is about 4254.1090724146. The cubic root of 18097444 is about 262.5462062274.

The spelling of 18097444 in words is "eighteen million, ninety-seven thousand, four hundred forty-four".