8978891584 has 168 divisors, whose sum is σ = 20288463360. Its totient is φ = 3935692800.

The previous prime is 8978891561. The next prime is 8978891591. The reversal of 8978891584 is 4851988798.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20452837 + ... + 20453275.

Almost surely, 2^8978891584 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 8978891584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10144231680).

8978891584 is an abundant number, since it is smaller than the sum of its proper divisors (11309571776).

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

8978891584 is a wasteful number, since it uses less digits than its factorization.

8978891584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 546 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 67.

The square root of 8978891584 is about 94757.0133763195. The cubic root of 8978891584 is about 2078.4563546868.

The spelling of 8978891584 in words is "eight billion, nine hundred seventy-eight million, eight hundred ninety-one thousand, five hundred eighty-four".