18368568839 has 16 divisors (see below), whose sum is σ = 19449830400. Its totient is φ = 17299000224.

The previous prime is 18368568749. The next prime is 18368568847. The reversal of 18368568839 is 93886586381.

It is not a de Polignac number, because 18368568839 - 2⁸ = 18368568583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368268839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160274 + ... + 3166080.

It is an arithmetic number, because the mean of its divisors is an integer number (1215614400).

Almost surely, 2^18368568839 is an apocalyptic number.

18368568839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18368568839 is a deficient number, since it is larger than the sum of its proper divisors (1081261561).

18368568839 is a wasteful number, since it uses less digits than its factorization.

18368568839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782.

The product of its digits is 59719680, while the sum is 65.

The spelling of 18368568839 in words is "eighteen billion, three hundred sixty-eight million, five hundred sixty-eight thousand, eight hundred thirty-nine".