198810930 has 64 divisors (see below), whose sum is σ = 491103360. Its totient is φ = 51480576.

The previous prime is 198810929. The next prime is 198810949. The reversal of 198810930 is 39018891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295074 + ... + 295746.

It is an arithmetic number, because the mean of its divisors is an integer number (7673490).

Almost surely, 2^198810930 is an apocalyptic number.

198810930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198810930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245551680).

198810930 is an abundant number, since it is smaller than the sum of its proper divisors (292292430).

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

198810930 is a wasteful number, since it uses less digits than its factorization.

198810930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 198810930 is about 14100.0329786848. The cubic root of 198810930 is about 583.6422893066.

The spelling of 198810930 in words is "one hundred ninety-eight million, eight hundred ten thousand, nine hundred thirty".