199694584384 has 63 divisors (see below), whose sum is σ = 401697662313. Its totient is φ = 98497738752.

The previous prime is 199694584381. The next prime is 199694584399. The reversal of 199694584384 is 483485496991.

It is a happy number.

The square root of 199694584384 is 446872.

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

199694584384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 65351809600 + 134342774784 = 255640^2 + 366528^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199694584381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 296722672 + ... + 296723344.

Almost surely, 2^199694584384 is an apocalyptic number.

199694584384 is the 446872-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199694584384

199694584384 is an abundant number, since it is smaller than the sum of its proper divisors (202003077929).

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

199694584384 is an frugal number, since it uses more digits than its factorization.

199694584384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524 (or 758 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 70.

The spelling of 199694584384 in words is "one hundred ninety-nine billion, six hundred ninety-four million, five hundred eighty-four thousand, three hundred eighty-four".