1165958317 has 2 divisors, whose sum is σ = 1165958318. Its totient is φ = 1165958316.

The previous prime is 1165958293. The next prime is 1165958327. The reversal of 1165958317 is 7138595611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 965282761 + 200675556 = 31069^2 + 14166^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165958317 - 2¹¹ = 1165956269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165958327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582979158 + 582979159.

It is an arithmetic number, because the mean of its divisors is an integer number (582979159).

Almost surely, 2^1165958317 is an apocalyptic number.

It is an amenable number.

1165958317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165958317 is an equidigital number, since it uses as much as digits as its factorization.

1165958317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 46.

The square root of 1165958317 is about 34146.1318014208. The cubic root of 1165958317 is about 1052.5134997507.

The spelling of 1165958317 in words is "one billion, one hundred sixty-five million, nine hundred fifty-eight thousand, three hundred seventeen".