804266161 has 2 divisors, whose sum is σ = 804266162. Its totient is φ = 804266160.

The previous prime is 804266159. The next prime is 804266173. The reversal of 804266161 is 161662408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 699919936 + 104346225 = 26456^2 + 10215^2 .

It is a cyclic number.

It is not a de Polignac number, because 804266161 - 2¹ = 804266159 is a prime.

Together with 804266159, it forms a pair of twin primes.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402133080 + 402133081.

It is an arithmetic number, because the mean of its divisors is an integer number (402133081).

Almost surely, 2^804266161 is an apocalyptic number.

It is an amenable number.

804266161 is a deficient number, since it is larger than the sum of its proper divisors (1).

804266161 is an equidigital number, since it uses as much as digits as its factorization.

804266161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 804266161 is about 28359.5867565097. The cubic root of 804266161 is about 929.9649892397.

The spelling of 804266161 in words is "eight hundred four million, two hundred sixty-six thousand, one hundred sixty-one".