198219825189 has 32 divisors (see below), whose sum is σ = 310987549440. Its totient is φ = 124351428096.

The previous prime is 198219825119. The next prime is 198219825229. The reversal of 198219825189 is 981528912891.

198219825189 is a `hidden beast` number, since 1 + 9 + 8 + 21 + 98 + 2 + 518 + 9 = 666.

It is not a de Polignac number, because 198219825189 - 2¹⁶ = 198219759653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198219825119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2818872 + ... + 2888334.

It is an arithmetic number, because the mean of its divisors is an integer number (9718360920).

Almost surely, 2^198219825189 is an apocalyptic number.

It is an amenable number.

198219825189 is a deficient number, since it is larger than the sum of its proper divisors (112767724251).

198219825189 is a wasteful number, since it uses less digits than its factorization.

198219825189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75706 (or 75700 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 63.

The spelling of 198219825189 in words is "one hundred ninety-eight billion, two hundred nineteen million, eight hundred twenty-five thousand, one hundred eighty-nine".