198489850 has 24 divisors (see below), whose sum is σ = 397591740. Its totient is φ = 73288320.

The previous prime is 198489821. The next prime is 198489853. The reversal of 198489850 is 58984891.

It can be written as a sum of positive squares in 6 ways, for example, as 44903401 + 153586449 = 6701^2 + 12393^2 .

It is not an unprimeable number, because it can be changed into a prime (198489853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152035 + ... + 153334.

Almost surely, 2^198489850 is an apocalyptic number.

198489850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198489850 is an abundant number, since it is smaller than the sum of its proper divisors (199101890).

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

198489850 is a wasteful number, since it uses less digits than its factorization.

198489850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305394 (or 305389 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 52.

The square root of 198489850 is about 14088.6425889793. The cubic root of 198489850 is about 583.3279255735.

The spelling of 198489850 in words is "one hundred ninety-eight million, four hundred eighty-nine thousand, eight hundred fifty".