18239874115 has 16 divisors (see below), whose sum is σ = 22848979968. Its totient is φ = 13951672416.

The previous prime is 18239874089. The next prime is 18239874137. The reversal of 18239874115 is 51147893281.

It is a cyclic number.

It is not a de Polignac number, because 18239874115 - 2¹⁷ = 18239743043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256162 + ... + 319528.

It is an arithmetic number, because the mean of its divisors is an integer number (1428061248).

Almost surely, 2^18239874115 is an apocalyptic number.

18239874115 is a deficient number, since it is larger than the sum of its proper divisors (4609105853).

18239874115 is a wasteful number, since it uses less digits than its factorization.

18239874115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65898.

The product of its digits is 483840, while the sum is 49.

The spelling of 18239874115 in words is "eighteen billion, two hundred thirty-nine million, eight hundred seventy-four thousand, one hundred fifteen".