8191932793 has 16 divisors (see below), whose sum is σ = 9577247616. Its totient is φ = 6930887040.

The previous prime is 8191932787. The next prime is 8191932803. The reversal of 8191932793 is 3972391918.

It is a de Polignac number, because none of the positive numbers 2^k-8191932793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8191932793.

It is not an unprimeable number, because it can be changed into a prime (8191932713) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 428196 + ... + 446917.

It is an arithmetic number, because the mean of its divisors is an integer number (598577976).

Almost surely, 2^8191932793 is an apocalyptic number.

It is an amenable number.

8191932793 is a deficient number, since it is larger than the sum of its proper divisors (1385314823).

8191932793 is a wasteful number, since it uses less digits than its factorization.

8191932793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875184.

The product of its digits is 734832, while the sum is 52.

The square root of 8191932793 is about 90509.2967213866. The cubic root of 8191932793 is about 2015.8681670879.

The spelling of 8191932793 in words is "eight billion, one hundred ninety-one million, nine hundred thirty-two thousand, seven hundred ninety-three".