1150665161 has 16 divisors (see below), whose sum is σ = 1231027200. Its totient is φ = 1073150400.

The previous prime is 1150665127. The next prime is 1150665181. The reversal of 1150665161 is 1615660511.

It is a cyclic number.

It is not a de Polignac number, because 1150665161 - 2³⁰ = 76923337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1150665181) 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 15 ways as a sum of consecutive naturals, for example, 737300 + ... + 738858.

It is an arithmetic number, because the mean of its divisors is an integer number (76939200).

Almost surely, 2^1150665161 is an apocalyptic number.

It is an amenable number.

1150665161 is a deficient number, since it is larger than the sum of its proper divisors (80362039).

1150665161 is a wasteful number, since it uses less digits than its factorization.

1150665161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 1150665161 is about 33921.4557618036. The cubic root of 1150665161 is about 1047.8915090890.

It can be divided in two parts, 11506 and 65161, that added together give a palindrome (76667).

The spelling of 1150665161 in words is "one billion, one hundred fifty million, six hundred sixty-five thousand, one hundred sixty-one".