813234297929 has 2 divisors, whose sum is σ = 813234297930. Its totient is φ = 813234297928.

The previous prime is 813234297899. The next prime is 813234297943. The reversal of 813234297929 is 929792432318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 626306046025 + 186928251904 = 791395^2 + 432352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813234297929 is a prime.

It is a super-2 number, since 2×813234297929² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (813234297949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406617148964 + 406617148965.

It is an arithmetic number, because the mean of its divisors is an integer number (406617148965).

Almost surely, 2^813234297929 is an apocalyptic number.

It is an amenable number.

813234297929 is a deficient number, since it is larger than the sum of its proper divisors (1).

813234297929 is an equidigital number, since it uses as much as digits as its factorization.

813234297929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 59.

The spelling of 813234297929 in words is "eight hundred thirteen billion, two hundred thirty-four million, two hundred ninety-seven thousand, nine hundred twenty-nine".