2539961916 has 48 divisors (see below), whose sum is σ = 5991348384. Its totient is φ = 837446656.

The previous prime is 2539961911. The next prime is 2539961929. The reversal of 2539961916 is 6191699352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539961911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479056 + ... + 484328.

It is an arithmetic number, because the mean of its divisors is an integer number (124819758).

Almost surely, 2^2539961916 is an apocalyptic number.

It is an amenable number.

2539961916 is an abundant number, since it is smaller than the sum of its proper divisors (3451386468).

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

2539961916 is a wasteful number, since it uses less digits than its factorization.

2539961916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710 (or 5708 counting only the distinct ones).

The product of its digits is 787320, while the sum is 51.

The square root of 2539961916 is about 50398.0348426404. The cubic root of 2539961916 is about 1364.4021705485.

The spelling of 2539961916 in words is "two billion, five hundred thirty-nine million, nine hundred sixty-one thousand, nine hundred sixteen".