5171912813 has 2 divisors, whose sum is σ = 5171912814. Its totient is φ = 5171912812.

The previous prime is 5171912791. The next prime is 5171912857. The reversal of 5171912813 is 3182191715.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4141952164 + 1029960649 = 64358^2 + 32093^2 .

It is a cyclic number.

It is not a de Polignac number, because 5171912813 - 2¹⁸ = 5171650669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5171917813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2585956406 + 2585956407.

It is an arithmetic number, because the mean of its divisors is an integer number (2585956407).

Almost surely, 2^5171912813 is an apocalyptic number.

It is an amenable number.

5171912813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5171912813 is an equidigital number, since it uses as much as digits as its factorization.

5171912813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 38.

The square root of 5171912813 is about 71916.0122156394. The cubic root of 5171912813 is about 1729.3533187243.

The spelling of 5171912813 in words is "five billion, one hundred seventy-one million, nine hundred twelve thousand, eight hundred thirteen".