384278818646 has 8 divisors (see below), whose sum is σ = 579003063744. Its totient is φ = 191277797400.

The previous prime is 384278818541. The next prime is 384278818709. The reversal of 384278818646 is 646818872483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 430805405 + ... + 430806296.

It is an arithmetic number, because the mean of its divisors is an integer number (72375382968).

Almost surely, 2^384278818646 is an apocalyptic number.

384278818646 is a deficient number, since it is larger than the sum of its proper divisors (194724245098).

384278818646 is a wasteful number, since it uses less digits than its factorization.

384278818646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861611926.

The product of its digits is 99090432, while the sum is 65.

The spelling of 384278818646 in words is "three hundred eighty-four billion, two hundred seventy-eight million, eight hundred eighteen thousand, six hundred forty-six".