394668159812 has 12 divisors (see below), whose sum is σ = 690805086720. Its totient is φ = 197295277896.

The previous prime is 394668159773. The next prime is 394668159869. The reversal of 394668159812 is 218951866493.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9677612 + ... + 9718307.

It is an arithmetic number, because the mean of its divisors is an integer number (57567090560).

Almost surely, 2^394668159812 is an apocalyptic number.

It is an amenable number.

394668159812 is a deficient number, since it is larger than the sum of its proper divisors (296136926908).

394668159812 is a wasteful number, since it uses less digits than its factorization.

394668159812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19401010 (or 19401008 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 62.

The spelling of 394668159812 in words is "three hundred ninety-four billion, six hundred sixty-eight million, one hundred fifty-nine thousand, eight hundred twelve".