7931642792 has 8 divisors (see below), whose sum is σ = 14871830250. Its totient is φ = 3965821392.

The previous prime is 7931642743. The next prime is 7931642819. The reversal of 7931642792 is 2972461397.

It can be written as a sum of positive squares in only one way, i.e., 6683716516 + 1247926276 = 81754^2 + 35326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 7931642792.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495727667 + ... + 495727682.

Almost surely, 2^7931642792 is an apocalyptic number.

It is an amenable number.

7931642792 is a deficient number, since it is larger than the sum of its proper divisors (6940187458).

7931642792 is a wasteful number, since it uses less digits than its factorization.

7931642792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991455355 (or 991455351 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 50.

The square root of 7931642792 is about 89059.7708957305. The cubic root of 7931642792 is about 1994.2872638593.

The spelling of 7931642792 in words is "seven billion, nine hundred thirty-one million, six hundred forty-two thousand, seven hundred ninety-two".