198173848321 has 8 divisors (see below), whose sum is σ = 204241415840. Its totient is φ = 192172593312.

The previous prime is 198173848319. The next prime is 198173848339. The reversal of 198173848321 is 123848371891.

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 198173848321 - 2¹ = 198173848319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198173848021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16572060 + ... + 16584013.

It is an arithmetic number, because the mean of its divisors is an integer number (25530176980).

Almost surely, 2^198173848321 is an apocalyptic number.

It is an amenable number.

198173848321 is a deficient number, since it is larger than the sum of its proper divisors (6067567519).

198173848321 is a wasteful number, since it uses less digits than its factorization.

198173848321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33156255.

The product of its digits is 2322432, while the sum is 55.

The spelling of 198173848321 in words is "one hundred ninety-eight billion, one hundred seventy-three million, eight hundred forty-eight thousand, three hundred twenty-one".