2315257644 has 36 divisors (see below), whose sum is σ = 6284272344. Its totient is φ = 661502016.

The previous prime is 2315257639. The next prime is 2315257657. The reversal of 2315257644 is 4467525132.

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, 1968169 + ... + 1969344.

Almost surely, 2^2315257644 is an apocalyptic number.

It is an amenable number.

2315257644 is an abundant number, since it is smaller than the sum of its proper divisors (3969014700).

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

2315257644 is a wasteful number, since it uses less digits than its factorization.

2315257644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937534 (or 3937525 counting only the distinct ones).

The product of its digits is 201600, while the sum is 39.

The square root of 2315257644 is about 48117.1242282828. The cubic root of 2315257644 is about 1322.9185582968.

The spelling of 2315257644 in words is "two billion, three hundred fifteen million, two hundred fifty-seven thousand, six hundred forty-four".