7991188360 has 32 divisors (see below), whose sum is σ = 17982748440. Its totient is φ = 3196017664.

The previous prime is 7991188343. The next prime is 7991188391. The reversal of 7991188360 is 638811997.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3298664356 + 4692524004 = 57434^2 + 68502^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7991188298 and 7991188307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476274 + ... + 492766.

Almost surely, 2^7991188360 is an apocalyptic number.

It is an amenable number.

7991188360 is an abundant number, since it is smaller than the sum of its proper divisors (9991560080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7991188360 is a wasteful number, since it uses less digits than its factorization.

7991188360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28617 (or 28613 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 7991188360 is about 89393.4469634100. The cubic root of 7991188360 is about 1999.2654269009.

The spelling of 7991188360 in words is "seven billion, nine hundred ninety-one million, one hundred eighty-eight thousand, three hundred sixty".