109800198 has 20 divisors (see below), whose sum is σ = 246034140. Its totient is φ = 36600012.

The previous prime is 109800193. The next prime is 109800227. The reversal of 109800198 is 891008901.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109800193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 338728 + ... + 339051.

It is an arithmetic number, because the mean of its divisors is an integer number (12301707).

Almost surely, 2^109800198 is an apocalyptic number.

109800198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109800198 is an abundant number, since it is smaller than the sum of its proper divisors (136233942).

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

109800198 is an equidigital number, since it uses as much as digits as its factorization.

109800198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677793 (or 677784 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 109800198 is about 10478.5589658120. The cubic root of 109800198 is about 478.8517082867.

The spelling of 109800198 in words is "one hundred nine million, eight hundred thousand, one hundred ninety-eight".