8919744672 has 48 divisors (see below), whose sum is σ = 23444279712. Its totient is φ = 2969445120.

The previous prime is 8919744653. The next prime is 8919744727. The reversal of 8919744672 is 2764479198.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16522 + ... + 134582.

It is an arithmetic number, because the mean of its divisors is an integer number (488422494).

Almost surely, 2^8919744672 is an apocalyptic number.

It is an amenable number.

8919744672 is an abundant number, since it is smaller than the sum of its proper divisors (14524535040).

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

8919744672 is a wasteful number, since it uses less digits than its factorization.

8919744672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118861 (or 118853 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 57.

The square root of 8919744672 is about 94444.3998975058. The cubic root of 8919744672 is about 2073.8824715096.

The spelling of 8919744672 in words is "eight billion, nine hundred nineteen million, seven hundred forty-four thousand, six hundred seventy-two".