9787683872 has 18 divisors (see below), whose sum is σ = 19270604493. Its totient is φ = 4893562112.

The previous prime is 9787683869. The next prime is 9787683881. The reversal of 9787683872 is 2783867879.

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 2 ways, for example, as 5207642896 + 4580040976 = 72164^2 + 67676^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=69956.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9787683799 and 9787683808.

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, 550904 + ... + 568392.

Almost surely, 2^9787683872 is an apocalyptic number.

It is an amenable number.

9787683872 is a deficient number, since it is larger than the sum of its proper divisors (9482920621).

9787683872 is an frugal number, since it uses more digits than its factorization.

9787683872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34988 (or 17491 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 65.

The square root of 9787683872 is about 98932.7239693722. The cubic root of 9787683872 is about 2139.0781157462.

The spelling of 9787683872 in words is "nine billion, seven hundred eighty-seven million, six hundred eighty-three thousand, eight hundred seventy-two".