8549181328 has 80 divisors (see below), whose sum is σ = 18278830080. Its totient is φ = 3855468672.

The previous prime is 8549181253. The next prime is 8549181341. The reversal of 8549181328 is 8231819458.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1556475 + ... + 1561957.

It is an arithmetic number, because the mean of its divisors is an integer number (228485376).

Almost surely, 2^8549181328 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 8549181328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9139415040).

8549181328 is an abundant number, since it is smaller than the sum of its proper divisors (9729648752).

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

8549181328 is a wasteful number, since it uses less digits than its factorization.

8549181328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756 (or 5750 counting only the distinct ones).

The product of its digits is 552960, while the sum is 49.

The square root of 8549181328 is about 92461.7830673841. The cubic root of 8549181328 is about 2044.7560861081.

The spelling of 8549181328 in words is "eight billion, five hundred forty-nine million, one hundred eighty-one thousand, three hundred twenty-eight".