199630903 has 2 divisors, whose sum is σ = 199630904. Its totient is φ = 199630902.

The previous prime is 199630889. The next prime is 199630943. The reversal of 199630903 is 309036991.

199630903 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 (199630943) can be obtained adding 199630903 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199630903 - 2⁹ = 199630391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199630943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99815451 + 99815452.

It is an arithmetic number, because the mean of its divisors is an integer number (99815452).

Almost surely, 2^199630903 is an apocalyptic number.

199630903 is a deficient number, since it is larger than the sum of its proper divisors (1).

199630903 is an equidigital number, since it uses as much as digits as its factorization.

199630903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 199630903 is about 14129.0800479012. The cubic root of 199630903 is about 584.4435773867.

The spelling of 199630903 in words is "one hundred ninety-nine million, six hundred thirty thousand, nine hundred three".