394523202189 has 8 divisors (see below), whose sum is σ = 530172912640. Its totient is φ = 260944479936.

The previous prime is 394523202173. The next prime is 394523202191. The reversal of 394523202189 is 981202325493.

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

It is not a de Polignac number, because 394523202189 - 2⁴ = 394523202173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394523202119) 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, 517746604 + ... + 517747365.

It is an arithmetic number, because the mean of its divisors is an integer number (66271614080).

Almost surely, 2^394523202189 is an apocalyptic number.

It is an amenable number.

394523202189 is a deficient number, since it is larger than the sum of its proper divisors (135649710451).

394523202189 is a wasteful number, since it uses less digits than its factorization.

394523202189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035494099.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 394523202189 in words is "three hundred ninety-four billion, five hundred twenty-three million, two hundred two thousand, one hundred eighty-nine".