1165104557 has 2 divisors, whose sum is σ = 1165104558. Its totient is φ = 1165104556.

The previous prime is 1165104511. The next prime is 1165104569. The reversal of 1165104557 is 7554015611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 977250121 + 187854436 = 31261^2 + 13706^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165104557 - 2²² = 1160910253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165101557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582552278 + 582552279.

It is an arithmetic number, because the mean of its divisors is an integer number (582552279).

Almost surely, 2^1165104557 is an apocalyptic number.

It is an amenable number.

1165104557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165104557 is an equidigital number, since it uses as much as digits as its factorization.

1165104557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 35.

The square root of 1165104557 is about 34133.6279495749. The cubic root of 1165104557 is about 1052.2565399234.

The spelling of 1165104557 in words is "one billion, one hundred sixty-five million, one hundred four thousand, five hundred fifty-seven".