194043668 has 48 divisors (see below), whose sum is σ = 419107584. Its totient is φ = 76550400.

The previous prime is 194043667. The next prime is 194043677. The reversal of 194043668 is 866340491.

194043668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194043667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218321 + ... + 219207.

It is an arithmetic number, because the mean of its divisors is an integer number (8731408).

Almost surely, 2^194043668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194043668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209553792).

194043668 is an abundant number, since it is smaller than the sum of its proper divisors (225063916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194043668 is a wasteful number, since it uses less digits than its factorization.

194043668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 194043668 is about 13929.9557788243. The cubic root of 194043668 is about 578.9394690545.

The spelling of 194043668 in words is "one hundred ninety-four million, forty-three thousand, six hundred sixty-eight".