18113738115 has 24 divisors (see below), whose sum is σ = 31856230224. Its totient is φ = 8782417600.

The previous prime is 18113738107. The next prime is 18113738143. The reversal of 18113738115 is 51183731181.

It is not a de Polignac number, because 18113738115 - 2³ = 18113738107 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4988196 + ... + 4991825.

It is an arithmetic number, because the mean of its divisors is an integer number (1327342926).

Almost surely, 2^18113738115 is an apocalyptic number.

18113738115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18113738115 is a deficient number, since it is larger than the sum of its proper divisors (13742492109).

18113738115 is a wasteful number, since it uses less digits than its factorization.

18113738115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9980051 (or 9980040 counting only the distinct ones).

The product of its digits is 20160, while the sum is 39.

The spelling of 18113738115 in words is "eighteen billion, one hundred thirteen million, seven hundred thirty-eight thousand, one hundred fifteen".