1165530765 has 16 divisors (see below), whose sum is σ = 2131256448. Its totient is φ = 532814016.

The previous prime is 1165530763. The next prime is 1165530823. The reversal of 1165530765 is 5670355611.

It is not a de Polignac number, because 1165530765 - 2¹ = 1165530763 is a prime.

It is a super-2 number, since 2×1165530765² = 2716923928322970450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165530763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5550042 + ... + 5550251.

It is an arithmetic number, because the mean of its divisors is an integer number (133203528).

Almost surely, 2^1165530765 is an apocalyptic number.

1165530765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1165530765 is a deficient number, since it is larger than the sum of its proper divisors (965725683).

1165530765 is a wasteful number, since it uses less digits than its factorization.

1165530765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11100308.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 1165530765 is about 34139.8706060817. The cubic root of 1165530765 is about 1052.3848332677.

The spelling of 1165530765 in words is "one billion, one hundred sixty-five million, five hundred thirty thousand, seven hundred sixty-five".