813146797 has 2 divisors, whose sum is σ = 813146798. Its totient is φ = 813146796.

The previous prime is 813146779. The next prime is 813146801. The reversal of 813146797 is 797641318.

Together with previous prime (813146779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428241636 + 384905161 = 20694^2 + 19619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813146797 is a prime.

It is a super-2 number, since 2×813146797² = 1322415426942718418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813144797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406573398 + 406573399.

It is an arithmetic number, because the mean of its divisors is an integer number (406573399).

Almost surely, 2^813146797 is an apocalyptic number.

It is an amenable number.

813146797 is a deficient number, since it is larger than the sum of its proper divisors (1).

813146797 is an equidigital number, since it uses as much as digits as its factorization.

813146797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 813146797 is about 28515.7289403585. The cubic root of 813146797 is about 933.3753314293.

The spelling of 813146797 in words is "eight hundred thirteen million, one hundred forty-six thousand, seven hundred ninety-seven".