2645613013 has 2 divisors, whose sum is σ = 2645613014. Its totient is φ = 2645613012.

The previous prime is 2645612999. The next prime is 2645613079. The reversal of 2645613013 is 3103165462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1426346289 + 1219266724 = 37767^2 + 34918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2645613013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645613613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322806506 + 1322806507.

It is an arithmetic number, because the mean of its divisors is an integer number (1322806507).

Almost surely, 2^2645613013 is an apocalyptic number.

It is an amenable number.

2645613013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645613013 is an equidigital number, since it uses as much as digits as its factorization.

2645613013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2645613013 is about 51435.5228708720. The cubic root of 2645613013 is about 1383.0634550439.

Adding to 2645613013 its reverse (3103165462), we get a palindrome (5748778475).

The spelling of 2645613013 in words is "two billion, six hundred forty-five million, six hundred thirteen thousand, thirteen".