8313642840 has 32 divisors (see below), whose sum is σ = 24940928880. Its totient is φ = 2216971392.

The previous prime is 8313642829. The next prime is 8313642853. The reversal of 8313642840 is 482463138.

It is a happy number.

It is a congruent number.

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, 34640059 + ... + 34640298.

Almost surely, 2^8313642840 is an apocalyptic number.

It is an amenable number.

8313642840 is an abundant number, since it is smaller than the sum of its proper divisors (16627286040).

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

8313642840 is a wasteful number, since it uses less digits than its factorization.

8313642840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69280371 (or 69280367 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 8313642840 is about 91179.1798603168. The cubic root of 8313642840 is about 2025.8025850787.

The spelling of 8313642840 in words is "eight billion, three hundred thirteen million, six hundred forty-two thousand, eight hundred forty".