163312765 has 32 divisors (see below), whose sum is σ = 254969856. Its totient is φ = 97373760.

The previous prime is 163312759. The next prime is 163312801. The reversal of 163312765 is 567213361.

It is not a de Polignac number, because 163312765 - 2⁷ = 163312637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163312765.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (7967808).

Almost surely, 2^163312765 is an apocalyptic number.

It is an amenable number.

163312765 is a deficient number, since it is larger than the sum of its proper divisors (91657091).

163312765 is a wasteful number, since it uses less digits than its factorization.

163312765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18489.

The product of its digits is 22680, while the sum is 34.

The square root of 163312765 is about 12779.3882873947. The cubic root of 163312765 is about 546.6047196231.

The spelling of 163312765 in words is "one hundred sixty-three million, three hundred twelve thousand, seven hundred sixty-five".