171960165 has 112 divisors (see below), whose sum is σ = 352558080. Its totient is φ = 79781760.

The previous prime is 171960157. The next prime is 171960181. The reversal of 171960165 is 561069171.

It is a happy number.

It is not a de Polignac number, because 171960165 - 2³ = 171960157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 900220 + ... + 900410.

It is an arithmetic number, because the mean of its divisors is an integer number (3147840).

Almost surely, 2^171960165 is an apocalyptic number.

171960165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

171960165 is an abundant number, since it is smaller than the sum of its proper divisors (180597915).

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

171960165 is a wasteful number, since it uses less digits than its factorization.

171960165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 171960165 is about 13113.3582655245. The cubic root of 171960165 is about 556.0868403341.

The spelling of 171960165 in words is "one hundred seventy-one million, nine hundred sixty thousand, one hundred sixty-five".