198427503 has 4 divisors (see below), whose sum is σ = 264570008. Its totient is φ = 132285000.

The previous prime is 198427501. The next prime is 198427589. The reversal of 198427503 is 305724891.

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

It is not a de Polignac number, because 198427503 - 2¹ = 198427501 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 (198427501) 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, 33071248 + ... + 33071253.

It is an arithmetic number, because the mean of its divisors is an integer number (66142502).

Almost surely, 2^198427503 is an apocalyptic number.

198427503 is a deficient number, since it is larger than the sum of its proper divisors (66142505).

198427503 is an equidigital number, since it uses as much as digits as its factorization.

198427503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66142504.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 198427503 is about 14086.4297463907. The cubic root of 198427503 is about 583.2668434329.

The spelling of 198427503 in words is "one hundred ninety-eight million, four hundred twenty-seven thousand, five hundred three".