194063638 has 16 divisors (see below), whose sum is σ = 295677360. Its totient is φ = 95510016.

The previous prime is 194063633. The next prime is 194063641. The reversal of 194063638 is 836360491.

It is a self number, because there is not a number n which added to its sum of digits gives 194063638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194063633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95206 + ... + 97222.

It is an arithmetic number, because the mean of its divisors is an integer number (18479835).

Almost surely, 2^194063638 is an apocalyptic number.

194063638 is a deficient number, since it is larger than the sum of its proper divisors (101613722).

194063638 is a wasteful number, since it uses less digits than its factorization.

194063638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 194063638 is about 13930.6725609355. The cubic root of 194063638 is about 578.9593288876.

The spelling of 194063638 in words is "one hundred ninety-four million, sixty-three thousand, six hundred thirty-eight".