194388474086 has 4 divisors (see below), whose sum is σ = 291582711132. Its totient is φ = 97194237042.

The previous prime is 194388474083. The next prime is 194388474199. The reversal of 194388474086 is 680474883491.

194388474086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194388474083) by changing a digit.

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 as a sum of consecutive naturals, namely, 48597118520 + ... + 48597118523.

It is an arithmetic number, because the mean of its divisors is an integer number (72895677783).

Almost surely, 2^194388474086 is an apocalyptic number.

194388474086 is a deficient number, since it is larger than the sum of its proper divisors (97194237046).

194388474086 is an equidigital number, since it uses as much as digits as its factorization.

194388474086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97194237045.

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 194388474086 in words is "one hundred ninety-four billion, three hundred eighty-eight million, four hundred seventy-four thousand, eighty-six".