198853412817 has 8 divisors (see below), whose sum is σ = 265313361600. Its totient is φ = 132481202960.

The previous prime is 198853412783. The next prime is 198853412827. The reversal of 198853412817 is 718214358891.

It is a happy number.

198853412817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198853412817 - 2⁷ = 198853412689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198853412827) 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 7 ways as a sum of consecutive naturals, for example, 21929442 + ... + 21938507.

It is an arithmetic number, because the mean of its divisors is an integer number (33164170200).

Almost surely, 2^198853412817 is an apocalyptic number.

It is an amenable number.

198853412817 is a deficient number, since it is larger than the sum of its proper divisors (66459948783).

198853412817 is a wasteful number, since it uses less digits than its factorization.

198853412817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43869463.

The product of its digits is 3870720, while the sum is 57.

The spelling of 198853412817 in words is "one hundred ninety-eight billion, eight hundred fifty-three million, four hundred twelve thousand, eight hundred seventeen".