198116100 has 432 divisors, whose sum is σ = 796199040. Its totient is φ = 40089600.

The previous prime is 198115999. The next prime is 198116137. The reversal of 198116100 is 1611891.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3357871 + ... + 3357929.

Almost surely, 2^198116100 is an apocalyptic number.

198116100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198116100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398099520).

198116100 is an abundant number, since it is smaller than the sum of its proper divisors (598082940).

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

198116100 is a wasteful number, since it uses less digits than its factorization.

198116100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 198116100 is about 14075.3721087579. The cubic root of 198116100 is about 582.9615662923.

Adding to 198116100 its reverse (1611891), we get a palindrome (199727991).

It can be divided in two parts, 1981 and 16100, that added together give a palindrome (18081).

The spelling of 198116100 in words is "one hundred ninety-eight million, one hundred sixteen thousand, one hundred".