199635113 has 2 divisors, whose sum is σ = 199635114. Its totient is φ = 199635112.

The previous prime is 199635103. The next prime is 199635151. The reversal of 199635113 is 311536991.

199635113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (199635151) can be obtained adding 199635113 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168688144 + 30946969 = 12988^2 + 5563^2 .

It is an emirp because it is prime and its reverse (311536991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199635113 - 2⁶ = 199635049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (199635103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99817556 + 99817557.

It is an arithmetic number, because the mean of its divisors is an integer number (99817557).

Almost surely, 2^199635113 is an apocalyptic number.

It is an amenable number.

199635113 is a deficient number, since it is larger than the sum of its proper divisors (1).

199635113 is an equidigital number, since it uses as much as digits as its factorization.

199635113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870, while the sum is 38.

The square root of 199635113 is about 14129.2290306301. The cubic root of 199635113 is about 584.4476857857.

The spelling of 199635113 in words is "one hundred ninety-nine million, six hundred thirty-five thousand, one hundred thirteen".