199635041 has 2 divisors, whose sum is σ = 199635042. Its totient is φ = 199635040.

The previous prime is 199635019. The next prime is 199635049. The reversal of 199635041 is 140536991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199628641 + 6400 = 14129^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 199635041 - 2⁶ = 199634977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199634986 and 199635004.

It is not a weakly prime, because it can be changed into another prime (199635049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99817520 + 99817521.

It is an arithmetic number, because the mean of its divisors is an integer number (99817521).

Almost surely, 2^199635041 is an apocalyptic number.

It is an amenable number.

199635041 is a deficient number, since it is larger than the sum of its proper divisors (1).

199635041 is an equidigital number, since it uses as much as digits as its factorization.

199635041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 199635041 is about 14129.2264827201. The cubic root of 199635041 is about 584.4476155237.

The spelling of 199635041 in words is "one hundred ninety-nine million, six hundred thirty-five thousand, forty-one".