394182897664 has 104 divisors (see below), whose sum is σ = 815944171520. Its totient is φ = 190207180800.

The previous prime is 394182897659. The next prime is 394182897683. The reversal of 394182897664 is 466798281493.

It is a self number, because there is not a number n which added to its sum of digits gives 394182897664.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48119809 + ... + 48127999.

Almost surely, 2^394182897664 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 394182897664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407972085760).

394182897664 is an abundant number, since it is smaller than the sum of its proper divisors (421761273856).

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

394182897664 is an equidigital number, since it uses as much as digits as its factorization.

394182897664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8625 (or 8603 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 67.

The spelling of 394182897664 in words is "three hundred ninety-four billion, one hundred eighty-two million, eight hundred ninety-seven thousand, six hundred sixty-four".