194438666304 has 189 divisors, whose sum is σ = 588808870767. Its totient is φ = 61338187008.

The previous prime is 194438666299. The next prime is 194438666321. The reversal of 194438666304 is 403666834491.

It is a happy number.

The square root of 194438666304 is 440952.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 201073629 + ... + 201074595.

Almost surely, 2^194438666304 is an apocalyptic number.

194438666304 is the 440952-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194438666304

194438666304 is an abundant number, since it is smaller than the sum of its proper divisors (394370204463).

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

194438666304 is an frugal number, since it uses more digits than its factorization.

194438666304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 194438666304 in words is "one hundred ninety-four billion, four hundred thirty-eight million, six hundred sixty-six thousand, three hundred four".