1167665117 has 4 divisors (see below), whose sum is σ = 1196144796. Its totient is φ = 1139185440.

The previous prime is 1167665113. The next prime is 1167665119. The reversal of 1167665117 is 7115667611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 475501636 + 692163481 = 21806^2 + 26309^2 .

It is a cyclic number.

It is not a de Polignac number, because 1167665117 - 2² = 1167665113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 28479637 = 1167665117 / (1 + 1 + 6 + 7 + 6 + 6 + 5 + 1 + 1 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167665113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14239778 + ... + 14239859.

It is an arithmetic number, because the mean of its divisors is an integer number (299036199).

Almost surely, 2^1167665117 is an apocalyptic number.

It is an amenable number.

1167665117 is a deficient number, since it is larger than the sum of its proper divisors (28479679).

1167665117 is an equidigital number, since it uses as much as digits as its factorization.

1167665117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28479678.

The product of its digits is 52920, while the sum is 41.

The square root of 1167665117 is about 34171.1152437260. The cubic root of 1167665117 is about 1053.0268269006.

The spelling of 1167665117 in words is "one billion, one hundred sixty-seven million, six hundred sixty-five thousand, one hundred seventeen".