199936201837 has 2 divisors, whose sum is σ = 199936201838. Its totient is φ = 199936201836.

The previous prime is 199936201831. The next prime is 199936201951. The reversal of 199936201837 is 738102639991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111254935401 + 88681266436 = 333549^2 + 297794^2 .

It is a cyclic number.

It is not a de Polignac number, because 199936201837 - 2⁷ = 199936201709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199936201831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99968100918 + 99968100919.

It is an arithmetic number, because the mean of its divisors is an integer number (99968100919).

Almost surely, 2^199936201837 is an apocalyptic number.

It is an amenable number.

199936201837 is a deficient number, since it is larger than the sum of its proper divisors (1).

199936201837 is an equidigital number, since it uses as much as digits as its factorization.

199936201837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The spelling of 199936201837 in words is "one hundred ninety-nine billion, nine hundred thirty-six million, two hundred one thousand, eight hundred thirty-seven".