818852702089 has 2 divisors, whose sum is σ = 818852702090. Its totient is φ = 818852702088.

The previous prime is 818852702077. The next prime is 818852702111. The reversal of 818852702089 is 980207258818.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660521925625 + 158330776464 = 812725^2 + 397908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-818852702089 is a prime.

It is not a weakly prime, because it can be changed into another prime (818852702029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409426351044 + 409426351045.

It is an arithmetic number, because the mean of its divisors is an integer number (409426351045).

Almost surely, 2^818852702089 is an apocalyptic number.

It is an amenable number.

818852702089 is a deficient number, since it is larger than the sum of its proper divisors (1).

818852702089 is an equidigital number, since it uses as much as digits as its factorization.

818852702089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5160960, while the sum is 58.

The spelling of 818852702089 in words is "eight hundred eighteen billion, eight hundred fifty-two million, seven hundred two thousand, eighty-nine".