8243315864 has 48 divisors (see below), whose sum is σ = 17998297200. Its totient is φ = 3529192128.

The previous prime is 8243315849. The next prime is 8243315881. The reversal of 8243315864 is 4685133428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386717 + ... + 407475.

It is an arithmetic number, because the mean of its divisors is an integer number (374964525).

Almost surely, 2^8243315864 is an apocalyptic number.

It is an amenable number.

8243315864 is an abundant number, since it is smaller than the sum of its proper divisors (9754981336).

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

8243315864 is a wasteful number, since it uses less digits than its factorization.

8243315864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21792 (or 21781 counting only the distinct ones).

The product of its digits is 552960, while the sum is 44.

The square root of 8243315864 is about 90792.7082094151. The cubic root of 8243315864 is about 2020.0741619016.

The spelling of 8243315864 in words is "eight billion, two hundred forty-three million, three hundred fifteen thousand, eight hundred sixty-four".