1161069165 has 24 divisors (see below), whose sum is σ = 2025350808. Its totient is φ = 615288960.

The previous prime is 1161069137. The next prime is 1161069167. The reversal of 1161069165 is 5619601611.

It can be written as a sum of positive squares in 4 ways, for example, as 54375876 + 1106693289 = 7374^2 + 33267^2 .

It is not a de Polignac number, because 1161069165 - 2⁹ = 1161068653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161069167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75106 + ... + 89235.

It is an arithmetic number, because the mean of its divisors is an integer number (84389617).

Almost surely, 2^1161069165 is an apocalyptic number.

1161069165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161069165 is a deficient number, since it is larger than the sum of its proper divisors (864281643).

1161069165 is a wasteful number, since it uses less digits than its factorization.

1161069165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164509 (or 164506 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 1161069165 is about 34074.4649994684. The cubic root of 1161069165 is about 1051.0402887203.

The spelling of 1161069165 in words is "one billion, one hundred sixty-one million, sixty-nine thousand, one hundred sixty-five".