198680195 has 16 divisors (see below), whose sum is σ = 279841728. Its totient is φ = 132554880.

The previous prime is 198680149. The next prime is 198680201. The reversal of 198680195 is 591086891.

It is not a de Polignac number, because 198680195 - 2¹⁶ = 198614659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 75416 + ... + 78005.

It is an arithmetic number, because the mean of its divisors is an integer number (17490108).

Almost surely, 2^198680195 is an apocalyptic number.

198680195 is a deficient number, since it is larger than the sum of its proper divisors (81161533).

198680195 is a wasteful number, since it uses less digits than its factorization.

198680195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153470.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 198680195 is about 14095.3962342319. The cubic root of 198680195 is about 583.5143298664.

The spelling of 198680195 in words is "one hundred ninety-eight million, six hundred eighty thousand, one hundred ninety-five".