193720198194 has 48 divisors (see below), whose sum is σ = 430595118720. Its totient is φ = 62921184480.

The previous prime is 193720198171. The next prime is 193720198211. The reversal of 193720198194 is 491891027391.

193720198194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 193720198194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 706954 + ... + 941925.

It is an arithmetic number, because the mean of its divisors is an integer number (8970731640).

Almost surely, 2^193720198194 is an apocalyptic number.

193720198194 is an abundant number, since it is smaller than the sum of its proper divisors (236874920526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

193720198194 is a wasteful number, since it uses less digits than its factorization.

193720198194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649055 (or 1649052 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 193720198194 in words is "one hundred ninety-three billion, seven hundred twenty million, one hundred ninety-eight thousand, one hundred ninety-four".