2564494073 has 2 divisors, whose sum is σ = 2564494074. Its totient is φ = 2564494072.

The previous prime is 2564494069. The next prime is 2564494111. The reversal of 2564494073 is 3704944652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2429306944 + 135187129 = 49288^2 + 11627^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564494073 - 2² = 2564494069 is a prime.

It is not a weakly prime, because it can be changed into another prime (2564494033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282247036 + 1282247037.

It is an arithmetic number, because the mean of its divisors is an integer number (1282247037).

Almost surely, 2^2564494073 is an apocalyptic number.

It is an amenable number.

2564494073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564494073 is an equidigital number, since it uses as much as digits as its factorization.

2564494073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 44.

The square root of 2564494073 is about 50640.8340472390. The cubic root of 2564494073 is about 1368.7807848681.

The spelling of 2564494073 in words is "two billion, five hundred sixty-four million, four hundred ninety-four thousand, seventy-three".