2813256139 has 2 divisors, whose sum is σ = 2813256140. Its totient is φ = 2813256138.

The previous prime is 2813256137. The next prime is 2813256151. The reversal of 2813256139 is 9316523182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2813256139 - 2¹ = 2813256137 is a prime.

Together with 2813256137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2813256137) 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 as a sum of consecutive naturals, namely, 1406628069 + 1406628070.

It is an arithmetic number, because the mean of its divisors is an integer number (1406628070).

Almost surely, 2^2813256139 is an apocalyptic number.

2813256139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2813256139 is an equidigital number, since it uses as much as digits as its factorization.

2813256139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 2813256139 is about 53040.1370567611. The cubic root of 2813256139 is about 1411.6805304832.

The spelling of 2813256139 in words is "two billion, eight hundred thirteen million, two hundred fifty-six thousand, one hundred thirty-nine".