198040205 has 8 divisors (see below), whose sum is σ = 259252704. Its totient is φ = 144029200.

The previous prime is 198040177. The next prime is 198040207. The reversal of 198040205 is 502040891.

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

It is not a de Polignac number, because 198040205 - 2¹⁰ = 198039181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198040207) 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 7 ways as a sum of consecutive naturals, for example, 1800311 + ... + 1800420.

It is an arithmetic number, because the mean of its divisors is an integer number (32406588).

Almost surely, 2^198040205 is an apocalyptic number.

It is an amenable number.

198040205 is a deficient number, since it is larger than the sum of its proper divisors (61212499).

198040205 is a wasteful number, since it uses less digits than its factorization.

198040205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600747.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 198040205 is about 14072.6758294221. The cubic root of 198040205 is about 582.8871158076.

The spelling of 198040205 in words is "one hundred ninety-eight million, forty thousand, two hundred five".