168000161 has 16 divisors (see below), whose sum is σ = 201891840. Its totient is φ = 136745280.

The previous prime is 168000143. The next prime is 168000167. The reversal of 168000161 is 161000861.

It is a happy number.

It is not a de Polignac number, because 168000161 - 2¹⁸ = 167738017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168000167) 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, 5600 + ... + 19166.

It is an arithmetic number, because the mean of its divisors is an integer number (12618240).

Almost surely, 2^168000161 is an apocalyptic number.

It is an amenable number.

168000161 is a deficient number, since it is larger than the sum of its proper divisors (33891679).

168000161 is a wasteful number, since it uses less digits than its factorization.

168000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13664.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 168000161 is about 12961.4876075241. The cubic root of 168000161 is about 551.7850115408.

The spelling of 168000161 in words is "one hundred sixty-eight million, one hundred sixty-one", and thus it is an aban number.