199985083 has 2 divisors, whose sum is σ = 199985084. Its totient is φ = 199985082.

The previous prime is 199985077. The next prime is 199985101. The reversal of 199985083 is 380589991.

It is a weak prime.

It is an emirp because it is prime and its reverse (380589991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199985083 - 2²⁵ = 166430651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199985083.

It is not a weakly prime, because it can be changed into another prime (199985053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99992541 + 99992542.

It is an arithmetic number, because the mean of its divisors is an integer number (99992542).

Almost surely, 2^199985083 is an apocalyptic number.

199985083 is a deficient number, since it is larger than the sum of its proper divisors (1).

199985083 is an equidigital number, since it uses as much as digits as its factorization.

199985083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 52.

The square root of 199985083 is about 14141.6082183039. The cubic root of 199985083 is about 584.7890080902.

The spelling of 199985083 in words is "one hundred ninety-nine million, nine hundred eighty-five thousand, eighty-three".