836130257 has 2 divisors, whose sum is σ = 836130258. Its totient is φ = 836130256.

The previous prime is 836130223. The next prime is 836130271. The reversal of 836130257 is 752031638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 773340481 + 62789776 = 27809^2 + 7924^2 .

It is a cyclic number.

It is not a de Polignac number, because 836130257 - 2¹⁸ = 835868113 is a prime.

It is a super-2 number, since 2×836130257² = 1398227613341772098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (836130277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418065128 + 418065129.

It is an arithmetic number, because the mean of its divisors is an integer number (418065129).

Almost surely, 2^836130257 is an apocalyptic number.

It is an amenable number.

836130257 is a deficient number, since it is larger than the sum of its proper divisors (1).

836130257 is an equidigital number, since it uses as much as digits as its factorization.

836130257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 836130257 is about 28915.9170181407. The cubic root of 836130257 is about 942.0876556053.

The spelling of 836130257 in words is "eight hundred thirty-six million, one hundred thirty thousand, two hundred fifty-seven".