9938789189198 has 16 divisors (see below), whose sum is σ = 14924765814480. Its totient is φ = 4963867776000.

The previous prime is 9938789189191. The next prime is 9938789189209. The reversal of 9938789189198 is 8919819878399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9938789189191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41380238 + ... + 41619726.

It is an arithmetic number, because the mean of its divisors is an integer number (932797863405).

Almost surely, 2^{9938789189198} is an apocalyptic number.

9938789189198 is a deficient number, since it is larger than the sum of its proper divisors (4985976625282).

9938789189198 is a wasteful number, since it uses less digits than its factorization.

9938789189198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262483.

The product of its digits is 5079158784, while the sum is 89.

The spelling of 9938789189198 in words is "nine trillion, nine hundred thirty-eight billion, seven hundred eighty-nine million, one hundred eighty-nine thousand, one hundred ninety-eight".