198659916 has 108 divisors (see below), whose sum is σ = 629162352. Its totient is φ = 52387776.

The previous prime is 198659899. The next prime is 198659921. The reversal of 198659916 is 619956891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18601 + ... + 27263.

Almost surely, 2^198659916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198659916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314581176).

198659916 is an abundant number, since it is smaller than the sum of its proper divisors (430502436).

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

198659916 is a wasteful number, since it uses less digits than its factorization.

198659916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700 (or 8688 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 198659916 is about 14094.6768675270. The cubic root of 198659916 is about 583.4944763698.

The spelling of 198659916 in words is "one hundred ninety-eight million, six hundred fifty-nine thousand, nine hundred sixteen".