2564338489 has 2 divisors, whose sum is σ = 2564338490. Its totient is φ = 2564338488.

The previous prime is 2564338451. The next prime is 2564338523. The reversal of 2564338489 is 9848334652.

2564338489 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 can be written as a sum of positive squares in only one way, i.e., 2373346089 + 190992400 = 48717^2 + 13820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564338489 - 2²¹ = 2562241337 is a prime.

It is not a weakly prime, because it can be changed into another prime (2564338409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282169244 + 1282169245.

It is an arithmetic number, because the mean of its divisors is an integer number (1282169245).

Almost surely, 2^2564338489 is an apocalyptic number.

It is an amenable number.

2564338489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564338489 is an equidigital number, since it uses as much as digits as its factorization.

2564338489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 52.

The square root of 2564338489 is about 50639.2978723047. The cubic root of 2564338489 is about 1368.7531036842.

The spelling of 2564338489 in words is "two billion, five hundred sixty-four million, three hundred thirty-eight thousand, four hundred eighty-nine".