18192431368 has 16 divisors (see below), whose sum is σ = 34115433660. Its totient is φ = 9094982400.

The previous prime is 18192431359. The next prime is 18192431393. The reversal of 18192431368 is 86313429181.

It can be written as a sum of positive squares in 2 ways, for example, as 17240215204 + 952216164 = 131302^2 + 30858^2 .

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, 89893 + ... + 210868.

Almost surely, 2^18192431368 is an apocalyptic number.

It is an amenable number.

18192431368 is a deficient number, since it is larger than the sum of its proper divisors (15923002292).

18192431368 is a wasteful number, since it uses less digits than its factorization.

18192431368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308328 (or 308324 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The spelling of 18192431368 in words is "eighteen billion, one hundred ninety-two million, four hundred thirty-one thousand, three hundred sixty-eight".