8194639066384 has 15 divisors (see below), whose sum is σ = 15877135376517. Its totient is φ = 4097313807936.

The previous prime is 8194639066343. The next prime is 8194639066387. The reversal of 8194639066384 is 4836609364918.

The square root of 8194639066384 is 2862628.

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

It can be written as a sum of positive squares in only one way, i.e., 6399382090000 + 1795256976384 = 2529700^2 + 1339872^2 .

It is a super-3 number, since 3×8194639066384³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8194639066387) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11092684 + ... + 11808340.

Almost surely, 2^{8194639066384} is an apocalyptic number.

8194639066384 is the 2862628-th square number.

It is an amenable number.

8194639066384 is a deficient number, since it is larger than the sum of its proper divisors (7682496310133).

8194639066384 is an frugal number, since it uses more digits than its factorization.

8194639066384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431322 (or 715659 counting only the distinct ones).

The product of its (nonzero) digits is 161243136, while the sum is 67.

The spelling of 8194639066384 in words is "eight trillion, one hundred ninety-four billion, six hundred thirty-nine million, sixty-six thousand, three hundred eighty-four".