198714189 has 4 divisors (see below), whose sum is σ = 264952256. Its totient is φ = 132476124.

The previous prime is 198714163. The next prime is 198714203. The reversal of 198714189 is 981417891.

198714189 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981417891 = 3 ⋅327139297.

It is not a de Polignac number, because 198714189 - 2²³ = 190325581 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 (198714389) 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, 33119029 + ... + 33119034.

It is an arithmetic number, because the mean of its divisors is an integer number (66238064).

Almost surely, 2^198714189 is an apocalyptic number.

It is an amenable number.

198714189 is a deficient number, since it is larger than the sum of its proper divisors (66238067).

198714189 is an equidigital number, since it uses as much as digits as its factorization.

198714189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66238066.

The product of its digits is 145152, while the sum is 48.

The square root of 198714189 is about 14096.6020373706. The cubic root of 198714189 is about 583.5476075582.

The spelling of 198714189 in words is "one hundred ninety-eight million, seven hundred fourteen thousand, one hundred eighty-nine".