198823194 has 64 divisors (see below), whose sum is σ = 472348800. Its totient is φ = 61772544.

The previous prime is 198823189. The next prime is 198823213. The reversal of 198823194 is 491328891.

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, 99069 + ... + 101055.

It is an arithmetic number, because the mean of its divisors is an integer number (7380450).

Almost surely, 2^198823194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198823194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236174400).

198823194 is an abundant number, since it is smaller than the sum of its proper divisors (273525606).

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

198823194 is a wasteful number, since it uses less digits than its factorization.

198823194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124 (or 2118 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 198823194 is about 14100.4678645781. The cubic root of 198823194 is about 583.6542900583.

The spelling of 198823194 in words is "one hundred ninety-eight million, eight hundred twenty-three thousand, one hundred ninety-four".