8019494784 has 192 divisors, whose sum is σ = 26769075840. Its totient is φ = 2256933888.

The previous prime is 8019494761. The next prime is 8019494849. The reversal of 8019494784 is 4874949108.

8019494784 is a `hidden beast` number, since 80 + 1 + 9 + 494 + 78 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 8019494784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 532867 + ... + 547709.

It is an arithmetic number, because the mean of its divisors is an integer number (139422270).

Almost surely, 2^8019494784 is an apocalyptic number.

8019494784 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8019494784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13384537920).

8019494784 is an abundant number, since it is smaller than the sum of its proper divisors (18749581056).

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

8019494784 is a wasteful number, since it uses less digits than its factorization.

8019494784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14937 (or 14922 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 8019494784 is about 89551.6319449288. The cubic root of 8019494784 is about 2001.6232475107.

The spelling of 8019494784 in words is "eight billion, nineteen million, four hundred ninety-four thousand, seven hundred eighty-four".