198374239873 has 8 divisors (see below), whose sum is σ = 217893902400. Its totient is φ = 179762468688.

The previous prime is 198374239823. The next prime is 198374239879. The reversal of 198374239873 is 378932473891.

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 198374239873 - 2¹³ = 198374231681 is a prime.

It is a super-2 number, since 2×198374239873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198374239879) 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, 226972378 + ... + 226973251.

It is an arithmetic number, because the mean of its divisors is an integer number (27236737800).

Almost surely, 2^198374239873 is an apocalyptic number.

It is an amenable number.

198374239873 is a deficient number, since it is larger than the sum of its proper divisors (19519662527).

198374239873 is a wasteful number, since it uses less digits than its factorization.

198374239873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453945671.

The product of its digits is 54867456, while the sum is 64.

The spelling of 198374239873 in words is "one hundred ninety-eight billion, three hundred seventy-four million, two hundred thirty-nine thousand, eight hundred seventy-three".