8631441613 has 2 divisors, whose sum is σ = 8631441614. Its totient is φ = 8631441612.

The previous prime is 8631441601. The next prime is 8631441641. The reversal of 8631441613 is 3161441368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7561693764 + 1069747849 = 86958^2 + 32707^2 .

It is a cyclic number.

It is not a de Polignac number, because 8631441613 - 2³³ = 41507021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8631442613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4315720806 + 4315720807.

It is an arithmetic number, because the mean of its divisors is an integer number (4315720807).

Almost surely, 2^8631441613 is an apocalyptic number.

It is an amenable number.

8631441613 is a deficient number, since it is larger than the sum of its proper divisors (1).

8631441613 is an equidigital number, since it uses as much as digits as its factorization.

8631441613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 8631441613 is about 92905.5521107323. The cubic root of 8631441613 is about 2051.2933827386.

The spelling of 8631441613 in words is "eight billion, six hundred thirty-one million, four hundred forty-one thousand, six hundred thirteen".