199210285913 has 2 divisors, whose sum is σ = 199210285914. Its totient is φ = 199210285912.

The previous prime is 199210285909. The next prime is 199210285933. The reversal of 199210285913 is 319582012991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126770178304 + 72440107609 = 356048^2 + 269147^2 .

It is a cyclic number.

It is not a de Polignac number, because 199210285913 - 2² = 199210285909 is a prime.

It is not a weakly prime, because it can be changed into another prime (199210285933) 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, 99605142956 + 99605142957.

It is an arithmetic number, because the mean of its divisors is an integer number (99605142957).

Almost surely, 2^199210285913 is an apocalyptic number.

It is an amenable number.

199210285913 is a deficient number, since it is larger than the sum of its proper divisors (1).

199210285913 is an equidigital number, since it uses as much as digits as its factorization.

199210285913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 50.

The spelling of 199210285913 in words is "one hundred ninety-nine billion, two hundred ten million, two hundred eighty-five thousand, nine hundred thirteen".