194231668 has 12 divisors (see below), whose sum is σ = 340016292. Its totient is φ = 97084160.

The previous prime is 194231659. The next prime is 194231689. The reversal of 194231668 is 866132491.

It can be written as a sum of positive squares in 2 ways, for example, as 93470224 + 100761444 = 9668^2 + 10038^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 194231668.

It is a congruent number.

It is an unprimeable number.

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, 10788 + ... + 22468.

It is an arithmetic number, because the mean of its divisors is an integer number (28334691).

Almost surely, 2^194231668 is an apocalyptic number.

It is an amenable number.

194231668 is a deficient number, since it is larger than the sum of its proper divisors (145784624).

194231668 is a wasteful number, since it uses less digits than its factorization.

194231668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15842 (or 15840 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 194231668 is about 13936.7021924127. The cubic root of 194231668 is about 579.1263779944.

The spelling of 194231668 in words is "one hundred ninety-four million, two hundred thirty-one thousand, six hundred sixty-eight".