2539695872 has 108 divisors (see below), whose sum is σ = 5925829896. Its totient is φ = 1083156480.

The previous prime is 2539695853. The next prime is 2539695877. The reversal of 2539695872 is 2785969352.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539695877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3675047 + ... + 3675737.

Almost surely, 2^2539695872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2539695872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2962914948).

2539695872 is an abundant number, since it is smaller than the sum of its proper divisors (3386134024).

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

2539695872 is an equidigital number, since it uses as much as digits as its factorization.

2539695872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 993 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 56.

The square root of 2539695872 is about 50395.3953452099. The cubic root of 2539695872 is about 1364.3545315552.

The spelling of 2539695872 in words is "two billion, five hundred thirty-nine million, six hundred ninety-five thousand, eight hundred seventy-two".