2564089609 has 2 divisors, whose sum is σ = 2564089610. Its totient is φ = 2564089608.

The previous prime is 2564089601. The next prime is 2564089663. The reversal of 2564089609 is 9069804652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2130284025 + 433805584 = 46155^2 + 20828^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564089609 - 2³ = 2564089601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2564089601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282044804 + 1282044805.

It is an arithmetic number, because the mean of its divisors is an integer number (1282044805).

Almost surely, 2^2564089609 is an apocalyptic number.

It is an amenable number.

2564089609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564089609 is an equidigital number, since it uses as much as digits as its factorization.

2564089609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 2564089609 is about 50636.8404326336. The cubic root of 2564089609 is about 1368.7088211404.

The spelling of 2564089609 in words is "two billion, five hundred sixty-four million, eighty-nine thousand, six hundred nine".