2845890161 has 2 divisors, whose sum is σ = 2845890162. Its totient is φ = 2845890160.

The previous prime is 2845890143. The next prime is 2845890169. The reversal of 2845890161 is 1610985482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2695582561 + 150307600 = 51919^2 + 12260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2845890161 - 2¹⁴ = 2845873777 is a prime.

It is not a weakly prime, because it can be changed into another prime (2845890169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1422945080 + 1422945081.

It is an arithmetic number, because the mean of its divisors is an integer number (1422945081).

Almost surely, 2^2845890161 is an apocalyptic number.

It is an amenable number.

2845890161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2845890161 is an equidigital number, since it uses as much as digits as its factorization.

2845890161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 2845890161 is about 53346.8852042929. The cubic root of 2845890161 is about 1417.1180989434.

The spelling of 2845890161 in words is "two billion, eight hundred forty-five million, eight hundred ninety thousand, one hundred sixty-one".