198594414809 has 40 divisors (see below), whose sum is σ = 238542212832. Its totient is φ = 165231057600.

The previous prime is 198594414787. The next prime is 198594414827. The reversal of 198594414809 is 908414495891.

It is a happy number.

198594414809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198594414809 - 2¹² = 198594410713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (198594414839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16822709 + ... + 16834509.

Almost surely, 2^198594414809 is an apocalyptic number.

It is an amenable number.

198594414809 is a deficient number, since it is larger than the sum of its proper divisors (39947798023).

198594414809 is an equidigital number, since it uses as much as digits as its factorization.

198594414809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12035 (or 12014 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 62.

The spelling of 198594414809 in words is "one hundred ninety-eight billion, five hundred ninety-four million, four hundred fourteen thousand, eight hundred nine".