194439818956 has 12 divisors (see below), whose sum is σ = 355064017392. Its totient is φ = 92992956848.

The previous prime is 194439818941. The next prime is 194439818959. The reversal of 194439818956 is 659818934491.

It is a junction number, because it is equal to n+sod(n) for n = 194439818891 and 194439818900.

It is not an unprimeable number, because it can be changed into a prime (194439818959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056738055 + ... + 1056738238.

It is an arithmetic number, because the mean of its divisors is an integer number (29588668116).

Almost surely, 2^194439818956 is an apocalyptic number.

It is an amenable number.

194439818956 is a deficient number, since it is larger than the sum of its proper divisors (160624198436).

194439818956 is a wasteful number, since it uses less digits than its factorization.

194439818956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113476320 (or 2113476318 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 67.

The spelling of 194439818956 in words is "one hundred ninety-four billion, four hundred thirty-nine million, eight hundred eighteen thousand, nine hundred fifty-six".