394181064329 has 8 divisors (see below), whose sum is σ = 426874210560. Its totient is φ = 361826707536.

The previous prime is 394181064317. The next prime is 394181064337. The reversal of 394181064329 is 923460181493.

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

It is a cyclic number.

It is not a de Polignac number, because 394181064329 - 2¹² = 394181060233 is a prime.

It is a super-2 number, since 2×394181064329² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394181064349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84694937 + ... + 84699590.

It is an arithmetic number, because the mean of its divisors is an integer number (53359276320).

Almost surely, 2^394181064329 is an apocalyptic number.

It is an amenable number.

394181064329 is a deficient number, since it is larger than the sum of its proper divisors (32693146231).

394181064329 is a wasteful number, since it uses less digits than its factorization.

394181064329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169394719.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 394181064329 in words is "three hundred ninety-four billion, one hundred eighty-one million, sixty-four thousand, three hundred twenty-nine".