8138927924 has 6 divisors (see below), whose sum is σ = 14243123874. Its totient is φ = 4069463960.

The previous prime is 8138927903. The next prime is 8138927941. The reversal of 8138927924 is 4297298318.

It can be written as a sum of positive squares in only one way, i.e., 7793711524 + 345216400 = 88282^2 + 18580^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1017365987 + ... + 1017365994.

It is an arithmetic number, because the mean of its divisors is an integer number (2373853979).

Almost surely, 2^8138927924 is an apocalyptic number.

It is an amenable number.

8138927924 is a deficient number, since it is larger than the sum of its proper divisors (6104195950).

8138927924 is a wasteful number, since it uses less digits than its factorization.

8138927924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034731985 (or 2034731983 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 8138927924 is about 90216.0070275780. The cubic root of 8138927924 is about 2011.5109489255.

The spelling of 8138927924 in words is "eight billion, one hundred thirty-eight million, nine hundred twenty-seven thousand, nine hundred twenty-four".