198582281 has 8 divisors (see below), whose sum is σ = 209514720. Its totient is φ = 187697952.

The previous prime is 198582269. The next prime is 198582289. The reversal of 198582281 is 182285891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198582281 - 2⁶ = 198582217 is a prime.

It is a super-2 number, since 2×198582281² = 78869844654325922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198582289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3380 + ... + 20213.

It is an arithmetic number, because the mean of its divisors is an integer number (26189340).

Almost surely, 2^198582281 is an apocalyptic number.

It is an amenable number.

198582281 is a deficient number, since it is larger than the sum of its proper divisors (10932439).

198582281 is a wasteful number, since it uses less digits than its factorization.

198582281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24055.

The product of its digits is 92160, while the sum is 44.

The square root of 198582281 is about 14091.9225444934. The cubic root of 198582281 is about 583.4184578540.

The spelling of 198582281 in words is "one hundred ninety-eight million, five hundred eighty-two thousand, two hundred eighty-one".