845199161 has 2 divisors, whose sum is σ = 845199162. Its totient is φ = 845199160.

The previous prime is 845199143. The next prime is 845199181. The reversal of 845199161 is 161991548.

845199161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824551225 + 20647936 = 28715^2 + 4544^2 .

It is a cyclic number.

It is not a de Polignac number, because 845199161 - 2¹⁴ = 845182777 is a prime.

It is a super-3 number, since 3×845199161³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (845199181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422599580 + 422599581.

It is an arithmetic number, because the mean of its divisors is an integer number (422599581).

Almost surely, 2^845199161 is an apocalyptic number.

It is an amenable number.

845199161 is a deficient number, since it is larger than the sum of its proper divisors (1).

845199161 is an equidigital number, since it uses as much as digits as its factorization.

845199161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 44.

The square root of 845199161 is about 29072.3091790109. The cubic root of 845199161 is about 945.4814642044.

The spelling of 845199161 in words is "eight hundred forty-five million, one hundred ninety-nine thousand, one hundred sixty-one".