198885150 has 144 divisors (see below), whose sum is σ = 564071040. Its totient is φ = 50169600.

The previous prime is 198885139. The next prime is 198885151. The reversal of 198885150 is 51588891.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 198885096 and 198885105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198885151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 739216 + ... + 739484.

It is an arithmetic number, because the mean of its divisors is an integer number (3917160).

Almost surely, 2^198885150 is an apocalyptic number.

198885150 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 198885150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282035520).

198885150 is an abundant number, since it is smaller than the sum of its proper divisors (365185890).

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

198885150 is a wasteful number, since it uses less digits than its factorization.

198885150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 45.

The square root of 198885150 is about 14102.6646418328. The cubic root of 198885150 is about 583.7149086227.

The spelling of 198885150 in words is "one hundred ninety-eight million, eight hundred eighty-five thousand, one hundred fifty".