394832121188 has 12 divisors (see below), whose sum is σ = 692808644220. Its totient is φ = 196886794272.

The previous prime is 394832121143. The next prime is 394832121191. The reversal of 394832121188 is 881121238493.

It can be written as a sum of positive squares in 2 ways, for example, as 318572194084 + 76259927104 = 564422^2 + 276152^2 .

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, 132314903 + ... + 132317886.

It is an arithmetic number, because the mean of its divisors is an integer number (57734053685).

Almost surely, 2^394832121188 is an apocalyptic number.

It is an amenable number.

394832121188 is a deficient number, since it is larger than the sum of its proper divisors (297976523032).

394832121188 is a wasteful number, since it uses less digits than its factorization.

394832121188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264633166 (or 264633164 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The spelling of 394832121188 in words is "three hundred ninety-four billion, eight hundred thirty-two million, one hundred twenty-one thousand, one hundred eighty-eight".