198478603 has 4 divisors (see below), whose sum is σ = 202701600. Its totient is φ = 194255608.

The previous prime is 198478571. The next prime is 198478649. The reversal of 198478603 is 306874891.

It is a happy number.

198478603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198478603 - 2⁵ = 198478571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198478673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111428 + ... + 2111521.

It is an arithmetic number, because the mean of its divisors is an integer number (50675400).

Almost surely, 2^198478603 is an apocalyptic number.

198478603 is a deficient number, since it is larger than the sum of its proper divisors (4222997).

198478603 is an equidigital number, since it uses as much as digits as its factorization.

198478603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222996.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 198478603 is about 14088.2434320252. The cubic root of 198478603 is about 583.3169076917.

The spelling of 198478603 in words is "one hundred ninety-eight million, four hundred seventy-eight thousand, six hundred three".