120163161 has 32 divisors (see below), whose sum is σ = 173703168. Its totient is φ = 73725120.

The previous prime is 120163139. The next prime is 120163189. The reversal of 120163161 is 161361021.

It is not a de Polignac number, because 120163161 - 2⁶ = 120163097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120163061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161356 + ... + 162098.

It is an arithmetic number, because the mean of its divisors is an integer number (5428224).

Almost surely, 2^120163161 is an apocalyptic number.

It is an amenable number.

120163161 is a deficient number, since it is larger than the sum of its proper divisors (53540007).

120163161 is a wasteful number, since it uses less digits than its factorization.

120163161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 120163161 is about 10961.8958670478. The cubic root of 120163161 is about 493.4658634177.

The spelling of 120163161 in words is "one hundred twenty million, one hundred sixty-three thousand, one hundred sixty-one".