816198307 has 2 divisors, whose sum is σ = 816198308. Its totient is φ = 816198306.

The previous prime is 816198289. The next prime is 816198311. The reversal of 816198307 is 703891618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816198307 - 2¹⁹ = 815674019 is a prime.

It is not a weakly prime, because it can be changed into another prime (816198107) 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, 408099153 + 408099154.

It is an arithmetic number, because the mean of its divisors is an integer number (408099154).

Almost surely, 2^816198307 is an apocalyptic number.

816198307 is a deficient number, since it is larger than the sum of its proper divisors (1).

816198307 is an equidigital number, since it uses as much as digits as its factorization.

816198307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 816198307 is about 28569.1845700923. The cubic root of 816198307 is about 934.5414385179.

The spelling of 816198307 in words is "eight hundred sixteen million, one hundred ninety-eight thousand, three hundred seven".