161474161 has 2 divisors, whose sum is σ = 161474162. Its totient is φ = 161474160.

The previous prime is 161474149. The next prime is 161474171.

161474161 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145950561 + 15523600 = 12081^2 + 3940^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 161474161 - 2¹⁷ = 161343089 is a prime.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (161474101) 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, 80737080 + 80737081.

It is an arithmetic number, because the mean of its divisors is an integer number (80737081).

Almost surely, 2^161474161 is an apocalyptic number.

It is an amenable number.

161474161 is a deficient number, since it is larger than the sum of its proper divisors (1).

161474161 is an equidigital number, since it uses as much as digits as its factorization.

161474161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 161474161 is about 12707.2483646146. The cubic root of 161474161 is about 544.5457157613.

The spelling of 161474161 in words is "one hundred sixty-one million, four hundred seventy-four thousand, one hundred sixty-one".