1165716265 has 32 divisors (see below), whose sum is σ = 1738520064. Its totient is φ = 731980800.

The previous prime is 1165716263. The next prime is 1165716287. The reversal of 1165716265 is 5626175611.

It is not a de Polignac number, because 1165716265 - 2¹ = 1165716263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165716263) 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 31 ways as a sum of consecutive naturals, for example, 4461 + ... + 48490.

It is an arithmetic number, because the mean of its divisors is an integer number (54328752).

Almost surely, 2^1165716265 is an apocalyptic number.

It is an amenable number.

1165716265 is a deficient number, since it is larger than the sum of its proper divisors (572803799).

1165716265 is a wasteful number, since it uses less digits than its factorization.

1165716265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53017.

The product of its digits is 75600, while the sum is 40.

The square root of 1165716265 is about 34142.5872628306. The cubic root of 1165716265 is about 1052.4406610607.

The spelling of 1165716265 in words is "one billion, one hundred sixty-five million, seven hundred sixteen thousand, two hundred sixty-five".