198873522 has 16 divisors (see below), whose sum is σ = 441941280. Its totient is φ = 66291156.

The previous prime is 198873449. The next prime is 198873523. The reversal of 198873522 is 225378891.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (198873523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841368 + ... + 1841475.

It is an arithmetic number, because the mean of its divisors is an integer number (27621330).

Almost surely, 2^198873522 is an apocalyptic number.

198873522 is an abundant number, since it is smaller than the sum of its proper divisors (243067758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198873522 is a wasteful number, since it uses less digits than its factorization.

198873522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682854 (or 3682848 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 198873522 is about 14102.2523732913. The cubic root of 198873522 is about 583.7035325945.

It can be divided in two parts, 19887 and 3522, that added together give a square (23409 = 153²).

The spelling of 198873522 in words is "one hundred ninety-eight million, eight hundred seventy-three thousand, five hundred twenty-two".