19994464092384 has 144 divisors (see below), whose sum is σ = 57123094601664. Its totient is φ = 6633941990400.

The previous prime is 19994464092349. The next prime is 19994464092389. The reversal of 19994464092384 is 48329046449991.

19994464092384 is a `hidden beast` number, since 1 + 9 + 99 + 446 + 4 + 0 + 92 + 3 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19994464092389) 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 23 ways as a sum of consecutive naturals, for example, 82688202 + ... + 82929654.

It is an arithmetic number, because the mean of its divisors is an integer number (396688156956).

Almost surely, 2^{19994464092384} 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 19994464092384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28561547300832).

19994464092384 is an abundant number, since it is smaller than the sum of its proper divisors (37128630509280).

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

19994464092384 is a wasteful number, since it uses less digits than its factorization.

19994464092384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242801 (or 242790 counting only the distinct ones).

The product of its (nonzero) digits is 483729408, while the sum is 72.

The spelling of 19994464092384 in words is "nineteen trillion, nine hundred ninety-four billion, four hundred sixty-four million, ninety-two thousand, three hundred eighty-four".