1157317957 has 2 divisors, whose sum is σ = 1157317958. Its totient is φ = 1157317956.

The previous prime is 1157317943. The next prime is 1157318003. The reversal of 1157317957 is 7597137511.

It is an a-pointer prime, because the next prime (1157318003) can be obtained adding 1157317957 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 876219201 + 281098756 = 29601^2 + 16766^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157317957 - 2¹⁵ = 1157285189 is a prime.

It is a super-4 number, since 4×1157317957⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157317937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578658978 + 578658979.

It is an arithmetic number, because the mean of its divisors is an integer number (578658979).

Almost surely, 2^1157317957 is an apocalyptic number.

It is an amenable number.

1157317957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157317957 is an equidigital number, since it uses as much as digits as its factorization.

1157317957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 231525, while the sum is 46.

The square root of 1157317957 is about 34019.3761994543. The cubic root of 1157317957 is about 1049.9071594406.

The spelling of 1157317957 in words is "one billion, one hundred fifty-seven million, three hundred seventeen thousand, nine hundred fifty-seven".