198445103 has 8 divisors (see below), whose sum is σ = 200703360. Its totient is φ = 196192800.

The previous prime is 198445087. The next prime is 198445123. The reversal of 198445103 is 301544891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198445103 - 2⁴ = 198445087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198445123) 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 in 7 ways as a sum of consecutive naturals, for example, 111938 + ... + 113696.

It is an arithmetic number, because the mean of its divisors is an integer number (25087920).

Almost surely, 2^198445103 is an apocalyptic number.

198445103 is a deficient number, since it is larger than the sum of its proper divisors (2258257).

198445103 is a wasteful number, since it uses less digits than its factorization.

198445103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 198445103 is about 14087.0544472576. The cubic root of 198445103 is about 583.2840876704.

Adding to 198445103 its reverse (301544891), we get a palindrome (499989994).

The spelling of 198445103 in words is "one hundred ninety-eight million, four hundred forty-five thousand, one hundred three".