1165172965 has 16 divisors (see below), whose sum is σ = 1529369280. Its totient is φ = 845147520.

The previous prime is 1165172923. The next prime is 1165172989. The reversal of 1165172965 is 5692715611.

It is a de Polignac number, because none of the positive numbers 2^k-1165172965 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7104 + ... + 48793.

It is an arithmetic number, because the mean of its divisors is an integer number (95585580).

Almost surely, 2^1165172965 is an apocalyptic number.

It is an amenable number.

1165172965 is a deficient number, since it is larger than the sum of its proper divisors (364196315).

1165172965 is a wasteful number, since it uses less digits than its factorization.

1165172965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56292.

The product of its digits is 113400, while the sum is 43.

The square root of 1165172965 is about 34134.6299965299. The cubic root of 1165172965 is about 1052.2771335992.

The spelling of 1165172965 in words is "one billion, one hundred sixty-five million, one hundred seventy-two thousand, nine hundred sixty-five".