198727103 has 4 divisors (see below), whose sum is σ = 198767880. Its totient is φ = 198686328.

The previous prime is 198727069. The next prime is 198727117. The reversal of 198727103 is 301727891.

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 198727103 - 2¹⁰ = 198726079 is a prime.

It is a super-2 number, since 2×198727103² = 78984922933545218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198720103) 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, 11900 + ... + 23217.

It is an arithmetic number, because the mean of its divisors is an integer number (49691970).

Almost surely, 2^198727103 is an apocalyptic number.

198727103 is a deficient number, since it is larger than the sum of its proper divisors (40777).

198727103 is an equidigital number, since it uses as much as digits as its factorization.

198727103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40776.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 198727103 is about 14097.0600835777. The cubic root of 198727103 is about 583.5602484448.

The spelling of 198727103 in words is "one hundred ninety-eight million, seven hundred twenty-seven thousand, one hundred three".