198200618 has 32 divisors (see below), whose sum is σ = 375902208. Its totient is φ = 76129200.

The previous prime is 198200599. The next prime is 198200623. The reversal of 198200618 is 816002891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1871 + ... + 19997.

It is an arithmetic number, because the mean of its divisors is an integer number (11746944).

Almost surely, 2^198200618 is an apocalyptic number.

198200618 is a deficient number, since it is larger than the sum of its proper divisors (177701590).

198200618 is a wasteful number, since it uses less digits than its factorization.

198200618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18218.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 198200618 is about 14078.3741248768. The cubic root of 198200618 is about 583.0444532810.

The spelling of 198200618 in words is "one hundred ninety-eight million, two hundred thousand, six hundred eighteen".