365995161 has 27 divisors (see below), whose sum is σ = 615647253. Its totient is φ = 208910520.

The previous prime is 365995141. The next prime is 365995163. The reversal of 365995161 is 161599563.

The square root of 365995161 is 19131.

It is a perfect power (a square), and thus also a powerful number.

365995161 is a `hidden beast` number, since 3 + 6 + 599 + 51 + 6 + 1 = 666.

It is not a de Polignac number, because 365995161 - 2⁷ = 365995033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (365995163) 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 26 ways as a sum of consecutive naturals, for example, 401296 + ... + 402206.

Almost surely, 2^365995161 is an apocalyptic number.

365995161 is the 19131-st square number.

365995161 is the 9566-th centered octagonal number.

It is an amenable number.

365995161 is a deficient number, since it is larger than the sum of its proper divisors (249652092).

365995161 is an frugal number, since it uses more digits than its factorization.

365995161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 921 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The cubic root of 365995161 is about 715.3058570491.

The spelling of 365995161 in words is "three hundred sixty-five million, nine hundred ninety-five thousand, one hundred sixty-one".