164605161 has 24 divisors (see below), whose sum is σ = 261253344. Its totient is φ = 91869120.

The previous prime is 164605127. The next prime is 164605163. The reversal of 164605161 is 161506461.

It is not a de Polignac number, because 164605161 - 2⁶ = 164605097 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (164605163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6700 + ... + 19341.

It is an arithmetic number, because the mean of its divisors is an integer number (10885556).

Almost surely, 2^164605161 is an apocalyptic number.

It is an amenable number.

164605161 is a deficient number, since it is larger than the sum of its proper divisors (96648183).

164605161 is a wasteful number, since it uses less digits than its factorization.

164605161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26101 (or 26094 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 164605161 is about 12829.8542860003. The cubic root of 164605161 is about 548.0428077185.

The spelling of 164605161 in words is "one hundred sixty-four million, six hundred five thousand, one hundred sixty-one".