179961161 has 2 divisors, whose sum is σ = 179961162. Its totient is φ = 179961160.

The previous prime is 179961137. The next prime is 179961191. The reversal of 179961161 is 161169971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148376761 + 31584400 = 12181^2 + 5620^2 .

It is a cyclic number.

It is not a de Polignac number, because 179961161 - 2⁶ = 179961097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (179961101) 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 as a sum of consecutive naturals, namely, 89980580 + 89980581.

It is an arithmetic number, because the mean of its divisors is an integer number (89980581).

Almost surely, 2^179961161 is an apocalyptic number.

It is an amenable number.

179961161 is a deficient number, since it is larger than the sum of its proper divisors (1).

179961161 is an equidigital number, since it uses as much as digits as its factorization.

179961161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 41.

The square root of 179961161 is about 13414.9603428411. The cubic root of 179961161 is about 564.5810045204.

The spelling of 179961161 in words is "one hundred seventy-nine million, nine hundred sixty-one thousand, one hundred sixty-one".