805186097 has 2 divisors, whose sum is σ = 805186098. Its totient is φ = 805186096.

The previous prime is 805186069. The next prime is 805186103. The reversal of 805186097 is 790681508.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661569841 + 143616256 = 25721^2 + 11984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805186097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (805186007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402593048 + 402593049.

It is an arithmetic number, because the mean of its divisors is an integer number (402593049).

Almost surely, 2^805186097 is an apocalyptic number.

It is an amenable number.

805186097 is a deficient number, since it is larger than the sum of its proper divisors (1).

805186097 is an equidigital number, since it uses as much as digits as its factorization.

805186097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 805186097 is about 28375.8012574095. The cubic root of 805186097 is about 930.3194250962.

The spelling of 805186097 in words is "eight hundred five million, one hundred eighty-six thousand, ninety-seven".