198086650 has 24 divisors (see below), whose sum is σ = 369289980. Its totient is φ = 79052160.

The previous prime is 198086633. The next prime is 198086689. The reversal of 198086650 is 56680891.

It can be written as a sum of positive squares in 6 ways, for example, as 105945849 + 92140801 = 10293^2 + 9599^2 .

It is a junction number, because it is equal to n+sod(n) for n = 198086597 and 198086606.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 18516 + ... + 27184.

Almost surely, 2^198086650 is an apocalyptic number.

198086650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198086650 is a deficient number, since it is larger than the sum of its proper divisors (171203330).

198086650 is a wasteful number, since it uses less digits than its factorization.

198086650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138 (or 9133 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 198086650 is about 14074.3259163627. The cubic root of 198086650 is about 582.9326790743.

The spelling of 198086650 in words is "one hundred ninety-eight million, eighty-six thousand, six hundred fifty".