394181064052 has 12 divisors (see below), whose sum is σ = 689874093216. Its totient is φ = 197074180280.

The previous prime is 394181064049. The next prime is 394181064071. The reversal of 394181064052 is 250460181493.

It is a super-2 number, since 2×394181064052² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 4033618 + ... + 4130185.

It is an arithmetic number, because the mean of its divisors is an integer number (57489507768).

Almost surely, 2^394181064052 is an apocalyptic number.

It is an amenable number.

394181064052 is a deficient number, since it is larger than the sum of its proper divisors (295693029164).

394181064052 is a wasteful number, since it uses less digits than its factorization.

394181064052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8175878 (or 8175876 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 394181064052 in words is "three hundred ninety-four billion, one hundred eighty-one million, sixty-four thousand, fifty-two".