2564514839 has 2 divisors, whose sum is σ = 2564514840. Its totient is φ = 2564514838.

The previous prime is 2564514803. The next prime is 2564514851. The reversal of 2564514839 is 9384154652.

2564514839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2564514839 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2564514793 and 2564514802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564514739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282257419 + 1282257420.

It is an arithmetic number, because the mean of its divisors is an integer number (1282257420).

Almost surely, 2^2564514839 is an apocalyptic number.

2564514839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564514839 is an equidigital number, since it uses as much as digits as its factorization.

2564514839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 47.

The square root of 2564514839 is about 50641.0390789921. The cubic root of 2564514839 is about 1368.7844794272.

The spelling of 2564514839 in words is "two billion, five hundred sixty-four million, five hundred fourteen thousand, eight hundred thirty-nine".