198940103 has 4 divisors (see below), whose sum is σ = 210642480. Its totient is φ = 187237728.

The previous prime is 198940099. The next prime is 198940109. The reversal of 198940103 is 301049891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301049891 = 1181 ⋅254911.

It is not a de Polignac number, because 198940103 - 2² = 198940099 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 (198940109) 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, 5851163 + ... + 5851196.

It is an arithmetic number, because the mean of its divisors is an integer number (52660620).

Almost surely, 2^198940103 is an apocalyptic number.

198940103 is a deficient number, since it is larger than the sum of its proper divisors (11702377).

198940103 is a wasteful number, since it uses less digits than its factorization.

198940103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11702376.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 198940103 is about 14104.6128270151. The cubic root of 198940103 is about 583.7686648257.

Adding to 198940103 its reverse (301049891), we get a palindrome (499989994).

The spelling of 198940103 in words is "one hundred ninety-eight million, nine hundred forty thousand, one hundred three".