2539752164 has 36 divisors (see below), whose sum is σ = 4541754924. Its totient is φ = 1242565632.

The previous prime is 2539752157. The next prime is 2539752181. The reversal of 2539752164 is 4612579352.

It can be written as a sum of positive squares in 2 ways, for example, as 485849764 + 2053902400 = 22042^2 + 45320^2 .

It is a congruent number.

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, 4115984 + ... + 4116600.

It is an arithmetic number, because the mean of its divisors is an integer number (126159859).

Almost surely, 2^2539752164 is an apocalyptic number.

It is an amenable number.

2539752164 is a deficient number, since it is larger than the sum of its proper divisors (2002002760).

2539752164 is a wasteful number, since it uses less digits than its factorization.

2539752164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 819 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The square root of 2539752164 is about 50395.9538455222. The cubic root of 2539752164 is about 1364.3646117225.

The spelling of 2539752164 in words is "two billion, five hundred thirty-nine million, seven hundred fifty-two thousand, one hundred sixty-four".