850658161 has 2 divisors, whose sum is σ = 850658162. Its totient is φ = 850658160.

The previous prime is 850658153. The next prime is 850658167. The reversal of 850658161 is 161856058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524639025 + 326019136 = 22905^2 + 18056^2 .

It is a cyclic number.

It is not a de Polignac number, because 850658161 - 2³ = 850658153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (850658167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425329080 + 425329081.

It is an arithmetic number, because the mean of its divisors is an integer number (425329081).

Almost surely, 2^850658161 is an apocalyptic number.

It is an amenable number.

850658161 is a deficient number, since it is larger than the sum of its proper divisors (1).

850658161 is an equidigital number, since it uses as much as digits as its factorization.

850658161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 850658161 is about 29166.0446581294. The cubic root of 850658161 is about 947.5126662699.

The spelling of 850658161 in words is "eight hundred fifty million, six hundred fifty-eight thousand, one hundred sixty-one".