161010165 has 16 divisors (see below), whose sum is σ = 257875200. Its totient is φ = 85785792.

The previous prime is 161010163. The next prime is 161010169. The reversal of 161010165 is 561010161.

It is not a de Polignac number, because 161010165 - 2¹ = 161010163 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161010163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11796 + ... + 21474.

It is an arithmetic number, because the mean of its divisors is an integer number (16117200).

Almost surely, 2^161010165 is an apocalyptic number.

161010165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161010165 is a deficient number, since it is larger than the sum of its proper divisors (96865035).

161010165 is a wasteful number, since it uses less digits than its factorization.

161010165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10796.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 161010165 is about 12688.9780912412. The cubic root of 161010165 is about 544.0236313354.

The spelling of 161010165 in words is "one hundred sixty-one million, ten thousand, one hundred sixty-five".