161016165 has 24 divisors (see below), whose sum is σ = 293785440. Its totient is φ = 81355104.

The previous prime is 161016157. The next prime is 161016199. The reversal of 161016165 is 561610161.

161016165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161016165 - 2³ = 161016157 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93307 + ... + 95016.

It is an arithmetic number, because the mean of its divisors is an integer number (12241060).

Almost surely, 2^161016165 is an apocalyptic number.

161016165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161016165 is a deficient number, since it is larger than the sum of its proper divisors (132769275).

161016165 is a wasteful number, since it uses less digits than its factorization.

161016165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188353 (or 188350 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 161016165 is about 12689.2145146971. The cubic root of 161016165 is about 544.0303888823.

The spelling of 161016165 in words is "one hundred sixty-one million, sixteen thousand, one hundred sixty-five".