198228759 has 4 divisors (see below), whose sum is σ = 264305016. Its totient is φ = 132152504.

The previous prime is 198228757. The next prime is 198228827. The reversal of 198228759 is 957822891.

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 198228759 - 2¹ = 198228757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198228757) 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, 33038124 + ... + 33038129.

It is an arithmetic number, because the mean of its divisors is an integer number (66076254).

Almost surely, 2^198228759 is an apocalyptic number.

198228759 is a deficient number, since it is larger than the sum of its proper divisors (66076257).

198228759 is an equidigital number, since it uses as much as digits as its factorization.

198228759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66076256.

The product of its digits is 725760, while the sum is 51.

The square root of 198228759 is about 14079.3735300971. The cubic root of 198228759 is about 583.0720459927.

The spelling of 198228759 in words is "one hundred ninety-eight million, two hundred twenty-eight thousand, seven hundred fifty-nine".