163251165 has 64 divisors (see below), whose sum is σ = 327462912. Its totient is φ = 67468800.

The previous prime is 163251149. The next prime is 163251167. The reversal of 163251165 is 561152361.

It is not a de Polignac number, because 163251165 - 2⁴ = 163251149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163251167) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 324304 + ... + 324806.

It is an arithmetic number, because the mean of its divisors is an integer number (5116608).

Almost surely, 2^163251165 is an apocalyptic number.

163251165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163251165 is an abundant number, since it is smaller than the sum of its proper divisors (164211747).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163251165 is a wasteful number, since it uses less digits than its factorization.

163251165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810.

The product of its digits is 5400, while the sum is 30.

The square root of 163251165 is about 12776.9779290723. The cubic root of 163251165 is about 546.5359863042.

The spelling of 163251165 in words is "one hundred sixty-three million, two hundred fifty-one thousand, one hundred sixty-five".