8947918672 has 160 divisors (see below), whose sum is σ = 22827110400. Its totient is φ = 3291840000.

The previous prime is 8947918663. The next prime is 8947918699. The reversal of 8947918672 is 2768197498.

It is a self number, because there is not a number n which added to its sum of digits gives 8947918672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11914297 + ... + 11915047.

It is an arithmetic number, because the mean of its divisors is an integer number (142669440).

Almost surely, 2^8947918672 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 8947918672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11413555200).

8947918672 is an abundant number, since it is smaller than the sum of its proper divisors (13879191728).

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

8947918672 is a wasteful number, since it uses less digits than its factorization.

8947918672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1299 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 61.

The square root of 8947918672 is about 94593.4388422368. The cubic root of 8947918672 is about 2076.0637056098.

The spelling of 8947918672 in words is "eight billion, nine hundred forty-seven million, nine hundred eighteen thousand, six hundred seventy-two".