198738441003 has 4 divisors (see below), whose sum is σ = 264984588008. Its totient is φ = 132492294000.

The previous prime is 198738440983. The next prime is 198738441119. The reversal of 198738441003 is 300144837891.

It is a happy number.

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

It is not a de Polignac number, because 198738441003 - 2²⁵ = 198704886571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198738440003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33123073498 + ... + 33123073503.

It is an arithmetic number, because the mean of its divisors is an integer number (66246147002).

Almost surely, 2^198738441003 is an apocalyptic number.

198738441003 is a deficient number, since it is larger than the sum of its proper divisors (66246147005).

198738441003 is an equidigital number, since it uses as much as digits as its factorization.

198738441003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66246147004.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 198738441003 in words is "one hundred ninety-eight billion, seven hundred thirty-eight million, four hundred forty-one thousand, three".