9843728672 has 18 divisors (see below), whose sum is σ = 19380945843. Its totient is φ = 4921583712.

The previous prime is 9843728647. The next prime is 9843728711. The reversal of 9843728672 is 2768273489.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 4921864336 + 4921864336 = 70156^2 + 70156^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=70156.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 552479 + ... + 570017.

Almost surely, 2^9843728672 is an apocalyptic number.

It is an amenable number.

9843728672 is a deficient number, since it is larger than the sum of its proper divisors (9537217171).

9843728672 is an frugal number, since it uses more digits than its factorization.

9843728672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35088 (or 17541 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 56.

The square root of 9843728672 is about 99215.5666818469. The cubic root of 9843728672 is about 2143.1531727523.

The spelling of 9843728672 in words is "nine billion, eight hundred forty-three million, seven hundred twenty-eight thousand, six hundred seventy-two".