199609603 has 2 divisors, whose sum is σ = 199609604. Its totient is φ = 199609602.

The previous prime is 199609601. The next prime is 199609661. The reversal of 199609603 is 306906991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199609603 - 2¹ = 199609601 is a prime.

Together with 199609601, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 199609603.

It is not a weakly prime, because it can be changed into another prime (199609601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99804801 + 99804802.

It is an arithmetic number, because the mean of its divisors is an integer number (99804802).

Almost surely, 2^199609603 is an apocalyptic number.

199609603 is a deficient number, since it is larger than the sum of its proper divisors (1).

199609603 is an equidigital number, since it uses as much as digits as its factorization.

199609603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 199609603 is about 14128.3262632203. The cubic root of 199609603 is about 584.4227905400.

The spelling of 199609603 in words is "one hundred ninety-nine million, six hundred nine thousand, six hundred three".