199105603 has 2 divisors, whose sum is σ = 199105604. Its totient is φ = 199105602.

The previous prime is 199105601. The next prime is 199105631. The reversal of 199105603 is 306501991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199105603 - 2¹ = 199105601 is a prime.

It is a super-2 number, since 2×199105603² = 79286082291987218, which contains 22 as substring.

Together with 199105601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (199105601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99552801 + 99552802.

It is an arithmetic number, because the mean of its divisors is an integer number (99552802).

Almost surely, 2^199105603 is an apocalyptic number.

199105603 is a deficient number, since it is larger than the sum of its proper divisors (1).

199105603 is an equidigital number, since it uses as much as digits as its factorization.

199105603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 199105603 is about 14110.4784823194. The cubic root of 199105603 is about 583.9305006977.

The spelling of 199105603 in words is "one hundred ninety-nine million, one hundred five thousand, six hundred three".