163730265 has 32 divisors (see below), whose sum is σ = 266872320. Its totient is φ = 85702656.

The previous prime is 163730263. The next prime is 163730267. The reversal of 163730265 is 562037361.

It is an interprime number because it is at equal distance from previous prime (163730263) and next prime (163730267).

It is not a de Polignac number, because 163730265 - 2¹ = 163730263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163730263) 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 31 ways as a sum of consecutive naturals, for example, 275809 + ... + 276401.

It is an arithmetic number, because the mean of its divisors is an integer number (8339760).

Almost surely, 2^163730265 is an apocalyptic number.

163730265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163730265 is a deficient number, since it is larger than the sum of its proper divisors (103142055).

163730265 is a wasteful number, since it uses less digits than its factorization.

163730265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 163730265 is about 12795.7127585766. The cubic root of 163730265 is about 547.0701114529.

The spelling of 163730265 in words is "one hundred sixty-three million, seven hundred thirty thousand, two hundred sixty-five".