2539158839 has 4 divisors (see below), whose sum is σ = 2901895824. Its totient is φ = 2176421856.

The previous prime is 2539158799. The next prime is 2539158851. The reversal of 2539158839 is 9388519352.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2539158839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539158859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181368482 + ... + 181368495.

It is an arithmetic number, because the mean of its divisors is an integer number (725473956).

Almost surely, 2^2539158839 is an apocalyptic number.

2539158839 is a deficient number, since it is larger than the sum of its proper divisors (362736985).

2539158839 is an equidigital number, since it uses as much as digits as its factorization.

2539158839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362736984.

The product of its digits is 2332800, while the sum is 53.

The square root of 2539158839 is about 50390.0668683819. The cubic root of 2539158839 is about 1364.2583579588.

The spelling of 2539158839 in words is "two billion, five hundred thirty-nine million, one hundred fifty-eight thousand, eight hundred thirty-nine".