194639385336 has 256 divisors, whose sum is σ = 578797954560. Its totient is φ = 53867151360.

The previous prime is 194639385329. The next prime is 194639385383. The reversal of 194639385336 is 633583936491.

It is a happy number.

194639385336 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 194639385336.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 71900895 + ... + 71903601.

It is an arithmetic number, because the mean of its divisors is an integer number (2260929510).

Almost surely, 2^194639385336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194639385336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289398977280).

194639385336 is an abundant number, since it is smaller than the sum of its proper divisors (384158569224).

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

194639385336 is a wasteful number, since it uses less digits than its factorization.

194639385336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214 (or 3210 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 60.

It can be divided in two parts, 194639 and 385336, that added together give a palindrome (579975).

The spelling of 194639385336 in words is "one hundred ninety-four billion, six hundred thirty-nine million, three hundred eighty-five thousand, three hundred thirty-six".