198286955219 has 4 divisors (see below), whose sum is σ = 198448034400. Its totient is φ = 198125876040.

The previous prime is 198286955201. The next prime is 198286955221. The reversal of 198286955219 is 912559682891.

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 198286955219 - 2³² = 193991987923 is a prime.

It is a super-2 number, since 2×198286955219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198286955239) 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, 80537744 + ... + 80540205.

It is an arithmetic number, because the mean of its divisors is an integer number (49612008600).

Almost surely, 2^198286955219 is an apocalyptic number.

198286955219 is a deficient number, since it is larger than the sum of its proper divisors (161079181).

198286955219 is a wasteful number, since it uses less digits than its factorization.

198286955219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161079180.

The product of its digits is 27993600, while the sum is 65.

The spelling of 198286955219 in words is "one hundred ninety-eight billion, two hundred eighty-six million, nine hundred fifty-five thousand, two hundred nineteen".