1165165117 has 2 divisors, whose sum is σ = 1165165118. Its totient is φ = 1165165116.

The previous prime is 1165165097. The next prime is 1165165121. The reversal of 1165165117 is 7115615611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1058786521 + 106378596 = 32539^2 + 10314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1165165117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165165147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582582558 + 582582559.

It is an arithmetic number, because the mean of its divisors is an integer number (582582559).

Almost surely, 2^1165165117 is an apocalyptic number.

It is an amenable number.

1165165117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165165117 is an equidigital number, since it uses as much as digits as its factorization.

1165165117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 34.

The square root of 1165165117 is about 34134.5150397658. The cubic root of 1165165117 is about 1052.2747710631.

The spelling of 1165165117 in words is "one billion, one hundred sixty-five million, one hundred sixty-five thousand, one hundred seventeen".