165915063 has 6 divisors (see below), whose sum is σ = 239655104. Its totient is φ = 110610036.

The previous prime is 165915047. The next prime is 165915137. The reversal of 165915063 is 360519561.

165915063 is a `hidden beast` number, since 1 + 6 + 591 + 5 + 0 + 63 = 666.

It is not a de Polignac number, because 165915063 - 2⁴ = 165915047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165915263) 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 5 ways as a sum of consecutive naturals, for example, 9217495 + ... + 9217512.

Almost surely, 2^165915063 is an apocalyptic number.

165915063 is a deficient number, since it is larger than the sum of its proper divisors (73740041).

165915063 is a wasteful number, since it uses less digits than its factorization.

165915063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18435013 (or 18435010 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 165915063 is about 12880.8021101172. The cubic root of 165915063 is about 549.4927146249.

The spelling of 165915063 in words is "one hundred sixty-five million, nine hundred fifteen thousand, sixty-three".