179940161 has 2 divisors, whose sum is σ = 179940162. Its totient is φ = 179940160.

The previous prime is 179940149. The next prime is 179940197. The reversal of 179940161 is 161049971.

179940161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178730161 + 1210000 = 13369^2 + 1100^2 .

It is an emirp because it is prime and its reverse (161049971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 179940161 - 2⁶ = 179940097 is a prime.

It is not a weakly prime, because it can be changed into another prime (179943161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89970080 + 89970081.

It is an arithmetic number, because the mean of its divisors is an integer number (89970081).

Almost surely, 2^179940161 is an apocalyptic number.

It is an amenable number.

179940161 is a deficient number, since it is larger than the sum of its proper divisors (1).

179940161 is an equidigital number, since it uses as much as digits as its factorization.

179940161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 179940161 is about 13414.1776117658. The cubic root of 179940161 is about 564.5590429997.

The spelling of 179940161 in words is "one hundred seventy-nine million, nine hundred forty thousand, one hundred sixty-one".