813451157 has 2 divisors, whose sum is σ = 813451158. Its totient is φ = 813451156.

The previous prime is 813451153. The next prime is 813451217. The reversal of 813451157 is 751154318.

813451157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605110801 + 208340356 = 24599^2 + 14434^2 .

It is a cyclic number.

It is not a de Polignac number, because 813451157 - 2² = 813451153 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813451153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406725578 + 406725579.

It is an arithmetic number, because the mean of its divisors is an integer number (406725579).

Almost surely, 2^813451157 is an apocalyptic number.

It is an amenable number.

813451157 is a deficient number, since it is larger than the sum of its proper divisors (1).

813451157 is an equidigital number, since it uses as much as digits as its factorization.

813451157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 35.

The square root of 813451157 is about 28521.0651449065. The cubic root of 813451157 is about 933.4917707079.

The spelling of 813451157 in words is "eight hundred thirteen million, four hundred fifty-one thousand, one hundred fifty-seven".