18119872 has 28 divisors (see below), whose sum is σ = 37120576. Its totient is φ = 8766720.

The previous prime is 18119869. The next prime is 18119879. The reversal of 18119872 is 27891181.

It is a super-2 number, since 2×18119872² = 656659522592768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2583 + ... + 6550.

Almost surely, 2^18119872 is an apocalyptic number.

It is an amenable number.

18119872 is an abundant number, since it is smaller than the sum of its proper divisors (19000704).

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

18119872 is an equidigital number, since it uses as much as digits as its factorization.

18119872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176 (or 9166 counting only the distinct ones).

The product of its digits is 8064, while the sum is 37.

The square root of 18119872 is about 4256.7442958205. The cubic root of 18119872 is about 262.6546185077.

The spelling of 18119872 in words is "eighteen million, one hundred nineteen thousand, eight hundred seventy-two".