1165915165 has 8 divisors (see below), whose sum is σ = 1481398200. Its totient is φ = 877865472.

The previous prime is 1165915141. The next prime is 1165915169. The reversal of 1165915165 is 5615195611.

It can be written as a sum of positive squares in 4 ways, for example, as 584237241 + 581677924 = 24171^2 + 24118^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1165915165 - 2¹⁷ = 1165784093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165915169) 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 7 ways as a sum of consecutive naturals, for example, 6858240 + ... + 6858409.

It is an arithmetic number, because the mean of its divisors is an integer number (185174775).

Almost surely, 2^1165915165 is an apocalyptic number.

It is an amenable number.

1165915165 is a deficient number, since it is larger than the sum of its proper divisors (315483035).

1165915165 is a wasteful number, since it uses less digits than its factorization.

1165915165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13716671.

The product of its digits is 40500, while the sum is 40.

The square root of 1165915165 is about 34145.4999231231. The cubic root of 1165915165 is about 1052.5005151176.

The spelling of 1165915165 in words is "one billion, one hundred sixty-five million, nine hundred fifteen thousand, one hundred sixty-five".