18113856 has 28 divisors (see below), whose sum is σ = 47926752. Its totient is φ = 6037888.

The previous prime is 18113839. The next prime is 18113881. The reversal of 18113856 is 65831181.

It is a super-2 number, since 2×18113856² = 656223558377472, which contains 22 as substring.

It is a congruent number.

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, 46980 + ... + 47363.

Almost surely, 2^18113856 is an apocalyptic number.

18113856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18113856 is an abundant number, since it is smaller than the sum of its proper divisors (29812896).

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

18113856 is an equidigital number, since it uses as much as digits as its factorization.

18113856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94358 (or 94348 counting only the distinct ones).

The product of its digits is 5760, while the sum is 33.

The square root of 18113856 is about 4256.0375938189. The cubic root of 18113856 is about 262.6255472006.

The spelling of 18113856 in words is "eighteen million, one hundred thirteen thousand, eight hundred fifty-six".