7913191608 has 96 divisors (see below), whose sum is σ = 24505752960. Its totient is φ = 2259754560.

The previous prime is 7913191597. The next prime is 7913191621. The reversal of 7913191608 is 8061913197.

7913191608 is a `hidden beast` number, since 7 + 9 + 1 + 31 + 9 + 1 + 608 = 666.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1684543 + ... + 1689233.

It is an arithmetic number, because the mean of its divisors is an integer number (255268260).

Almost surely, 2^7913191608 is an apocalyptic number.

It is an amenable number.

7913191608 is an abundant number, since it is smaller than the sum of its proper divisors (16592561352).

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

7913191608 is a wasteful number, since it uses less digits than its factorization.

7913191608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8057 (or 8050 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 7913191608 is about 88956.1218129478. The cubic root of 7913191608 is about 1992.7396428330.

The spelling of 7913191608 in words is "seven billion, nine hundred thirteen million, one hundred ninety-one thousand, six hundred eight".