812695157 has 2 divisors, whose sum is σ = 812695158. Its totient is φ = 812695156.

The previous prime is 812695129. The next prime is 812695201. The reversal of 812695157 is 751596218.

It is an a-pointer prime, because the next prime (812695201) can be obtained adding 812695157 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 686492401 + 126202756 = 26201^2 + 11234^2 .

It is a cyclic number.

It is not a de Polignac number, because 812695157 - 2¹⁰ = 812694133 is a prime.

It is a super-2 number, since 2×812695157² = 1320946836422509298, 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 (812665157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406347578 + 406347579.

It is an arithmetic number, because the mean of its divisors is an integer number (406347579).

Almost surely, 2^812695157 is an apocalyptic number.

It is an amenable number.

812695157 is a deficient number, since it is larger than the sum of its proper divisors (1).

812695157 is an equidigital number, since it uses as much as digits as its factorization.

812695157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 44.

The square root of 812695157 is about 28507.8087021784. The cubic root of 812695157 is about 933.2024935496.

The spelling of 812695157 in words is "eight hundred twelve million, six hundred ninety-five thousand, one hundred fifty-seven".