2620391316 has 24 divisors (see below), whose sum is σ = 6136013184. Its totient is φ = 870354240.

The previous prime is 2620391261. The next prime is 2620391317. The reversal of 2620391316 is 6131930262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620391317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385180 + ... + 391923.

It is an arithmetic number, because the mean of its divisors is an integer number (255667216).

Almost surely, 2^2620391316 is an apocalyptic number.

It is an amenable number.

2620391316 is an abundant number, since it is smaller than the sum of its proper divisors (3515621868).

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

2620391316 is a wasteful number, since it uses less digits than its factorization.

2620391316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777391 (or 777389 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 2620391316 is about 51189.7579208966. The cubic root of 2620391316 is about 1378.6543130682.

The spelling of 2620391316 in words is "two billion, six hundred twenty million, three hundred ninety-one thousand, three hundred sixteen".