198492850 has 48 divisors (see below), whose sum is σ = 392740488. Its totient is φ = 74378240.

The previous prime is 198492839. The next prime is 198492863. The reversal of 198492850 is 58294891.

198492850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

198492850 is a nontrivial binomial coefficient, being equal to C(19925, 2).

It can be written as a sum of positive squares in 12 ways, for example, as 75881521 + 122611329 = 8711^2 + 11073^2 .

It is a super-2 number, since 2×198492850² = 78798823002245000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198492850.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248652 + ... + 249448.

Almost surely, 2^198492850 is an apocalyptic number.

198492850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198492850 is the 19924-th triangular number.

198492850 is the 6642-nd centered nonagonal number.

198492850 is a deficient number, since it is larger than the sum of its proper divisors (194247638).

198492850 is a wasteful number, since it uses less digits than its factorization.

198492850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 198492850 is about 14088.7490573152. The cubic root of 198492850 is about 583.3308643886.

The spelling of 198492850 in words is "one hundred ninety-eight million, four hundred ninety-two thousand, eight hundred fifty".