16845161 has 2 divisors, whose sum is σ = 16845162. Its totient is φ = 16845160.

The previous prime is 16845067. The next prime is 16845173. The reversal of 16845161 is 16154861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15452761 + 1392400 = 3931^2 + 1180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16845161 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16845061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8422580 + 8422581.

It is an arithmetic number, because the mean of its divisors is an integer number (8422581).

Almost surely, 2^16845161 is an apocalyptic number.

It is an amenable number.

16845161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16845161 is an equidigital number, since it uses as much as digits as its factorization.

16845161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 16845161 is about 4104.2856869375. The cubic root of 16845161 is about 256.3451206652.

The spelling of 16845161 in words is "sixteen million, eight hundred forty-five thousand, one hundred sixty-one".