169458161 has 2 divisors, whose sum is σ = 169458162. Its totient is φ = 169458160.

The previous prime is 169458143. The next prime is 169458199. The reversal of 169458161 is 161854961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167857936 + 1600225 = 12956^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 169458161 - 2¹⁴ = 169441777 is a 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 (169458461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84729080 + 84729081.

It is an arithmetic number, because the mean of its divisors is an integer number (84729081).

Almost surely, 2^169458161 is an apocalyptic number.

It is an amenable number.

169458161 is a deficient number, since it is larger than the sum of its proper divisors (1).

169458161 is an equidigital number, since it uses as much as digits as its factorization.

169458161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 169458161 is about 13017.6096500087. The cubic root of 169458161 is about 553.3766496872.

The spelling of 169458161 in words is "one hundred sixty-nine million, four hundred fifty-eight thousand, one hundred sixty-one".