198951800 has 48 divisors (see below), whose sum is σ = 477499200. Its totient is φ = 77011200.

The previous prime is 198951787. The next prime is 198951821. The reversal of 198951800 is 8159891.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 9845 + ... + 22244.

It is an arithmetic number, because the mean of its divisors is an integer number (9947900).

Almost surely, 2^198951800 is an apocalyptic number.

198951800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198951800 is an abundant number, since it is smaller than the sum of its proper divisors (278547400).

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

198951800 is a wasteful number, since it uses less digits than its factorization.

198951800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32136 (or 32127 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 198951800 is about 14105.0274725007. The cubic root of 198951800 is about 583.7801058041.

The spelling of 198951800 in words is "one hundred ninety-eight million, nine hundred fifty-one thousand, eight hundred".