8191319052 has 24 divisors (see below), whose sum is σ = 21843517696. Its totient is φ = 2340376848.

The previous prime is 8191319039. The next prime is 8191319063. The reversal of 8191319052 is 2509131918.

It is a self number, because there is not a number n which added to its sum of digits gives 8191319052.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48757768 + ... + 48757935.

Almost surely, 2^8191319052 is an apocalyptic number.

It is an amenable number.

8191319052 is an abundant number, since it is smaller than the sum of its proper divisors (13652198644).

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

8191319052 is a wasteful number, since it uses less digits than its factorization.

8191319052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97515717 (or 97515715 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 8191319052 is about 90505.9061719179. The cubic root of 8191319052 is about 2015.8178227685.

The spelling of 8191319052 in words is "eight billion, one hundred ninety-one million, three hundred nineteen thousand, fifty-two".