805895161 has 2 divisors, whose sum is σ = 805895162. Its totient is φ = 805895160.

The previous prime is 805895141. The next prime is 805895171. The reversal of 805895161 is 161598508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646125561 + 159769600 = 25419^2 + 12640^2 .

It is a cyclic number.

It is not a de Polignac number, because 805895161 - 2¹³ = 805886969 is a prime.

It is not a weakly prime, because it can be changed into another prime (805895141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402947580 + 402947581.

It is an arithmetic number, because the mean of its divisors is an integer number (402947581).

Almost surely, 2^805895161 is an apocalyptic number.

It is an amenable number.

805895161 is a deficient number, since it is larger than the sum of its proper divisors (1).

805895161 is an equidigital number, since it uses as much as digits as its factorization.

805895161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 43.

The square root of 805895161 is about 28388.2926749743. The cubic root of 805895161 is about 930.5924313301.

The spelling of 805895161 in words is "eight hundred five million, eight hundred ninety-five thousand, one hundred sixty-one".