198382579 has 4 divisors (see below), whose sum is σ = 198411984. Its totient is φ = 198353176.

The previous prime is 198382549. The next prime is 198382589. The reversal of 198382579 is 975283891.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 975283891 = 29 ⋅33630479.

It is a cyclic number.

It is not a de Polignac number, because 198382579 - 2⁷ = 198382451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198382529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029 + ... + 19945.

It is an arithmetic number, because the mean of its divisors is an integer number (49602996).

Almost surely, 2^198382579 is an apocalyptic number.

198382579 is a deficient number, since it is larger than the sum of its proper divisors (29405).

198382579 is a wasteful number, since it uses less digits than its factorization.

198382579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29404.

The product of its digits is 1088640, while the sum is 52.

The square root of 198382579 is about 14084.8350718068. The cubic root of 198382579 is about 583.2228228932. Note that the first 3 decimals are identical.

The spelling of 198382579 in words is "one hundred ninety-eight million, three hundred eighty-two thousand, five hundred seventy-nine".