810946117 has 2 divisors, whose sum is σ = 810946118. Its totient is φ = 810946116.

The previous prime is 810946109. The next prime is 810946127. The reversal of 810946117 is 711649018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540376516 + 270569601 = 23246^2 + 16449^2 .

It is a cyclic number.

It is not a de Polignac number, because 810946117 - 2³ = 810946109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (810946127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405473058 + 405473059.

It is an arithmetic number, because the mean of its divisors is an integer number (405473059).

Almost surely, 2^810946117 is an apocalyptic number.

It is an amenable number.

810946117 is a deficient number, since it is larger than the sum of its proper divisors (1).

810946117 is an equidigital number, since it uses as much as digits as its factorization.

810946117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 810946117 is about 28477.1156720620. The cubic root of 810946117 is about 932.5325495183.

The spelling of 810946117 in words is "eight hundred ten million, nine hundred forty-six thousand, one hundred seventeen".