2531660648 has 32 divisors (see below), whose sum is σ = 5183568000. Its totient is φ = 1149605760.

The previous prime is 2531660633. The next prime is 2531660671. The reversal of 2531660648 is 8460661352.

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, 77588 + ... + 105276.

It is an arithmetic number, because the mean of its divisors is an integer number (161986500).

Almost surely, 2^2531660648 is an apocalyptic number.

It is an amenable number.

2531660648 is an abundant number, since it is smaller than the sum of its proper divisors (2651907352).

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

2531660648 is a wasteful number, since it uses less digits than its factorization.

2531660648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28745 (or 28741 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 2531660648 is about 50315.6103808748. The cubic root of 2531660648 is about 1362.9141391020.

The spelling of 2531660648 in words is "two billion, five hundred thirty-one million, six hundred sixty thousand, six hundred forty-eight".