2513089681 has 2 divisors, whose sum is σ = 2513089682. Its totient is φ = 2513089680.

The previous prime is 2513089643. The next prime is 2513089697. The reversal of 2513089681 is 1869803152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2511613456 + 1476225 = 50116^2 + 1215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2513089681 - 2²⁵ = 2479535249 is a prime.

It is a super-2 number, since 2×2513089681² = 12631239489497363522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2513089781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256544840 + 1256544841.

It is an arithmetic number, because the mean of its divisors is an integer number (1256544841).

Almost surely, 2^2513089681 is an apocalyptic number.

It is an amenable number.

2513089681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2513089681 is an equidigital number, since it uses as much as digits as its factorization.

2513089681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 2513089681 is about 50130.7259173453. The cubic root of 2513089681 is about 1359.5734102155.

The spelling of 2513089681 in words is "two billion, five hundred thirteen million, eighty-nine thousand, six hundred eighty-one".