8138392312 has 16 divisors (see below), whose sum is σ = 15922941840. Its totient is φ = 3892274496.

The previous prime is 8138392307. The next prime is 8138392333. The reversal of 8138392312 is 2132938318.

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, 22115013 + ... + 22115380.

It is an arithmetic number, because the mean of its divisors is an integer number (995183865).

Almost surely, 2^8138392312 is an apocalyptic number.

It is an amenable number.

8138392312 is a deficient number, since it is larger than the sum of its proper divisors (7784549528).

8138392312 is a wasteful number, since it uses less digits than its factorization.

8138392312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44230422 (or 44230418 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 8138392312 is about 90213.0384811420. The cubic root of 8138392312 is about 2011.4668230059.

The spelling of 8138392312 in words is "eight billion, one hundred thirty-eight million, three hundred ninety-two thousand, three hundred twelve".