9638443243 has 16 divisors (see below), whose sum is σ = 11391319296. Its totient is φ = 8039751840.

The previous prime is 9638443229. The next prime is 9638443259. The reversal of 9638443243 is 3423448369.

It is a cyclic number.

It is not a de Polignac number, because 9638443243 - 2²¹ = 9636346091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9638443193 and 9638443202.

It is not an unprimeable number, because it can be changed into a prime (9638443223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177921 + ... + 225682.

It is an arithmetic number, because the mean of its divisors is an integer number (711957456).

Almost surely, 2^9638443243 is an apocalyptic number.

9638443243 is a deficient number, since it is larger than the sum of its proper divisors (1752876053).

9638443243 is a wasteful number, since it uses less digits than its factorization.

9638443243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403794.

The product of its digits is 1492992, while the sum is 46.

The square root of 9638443243 is about 98175.5735557476. The cubic root of 9638443243 is about 2128.1503072448.

The spelling of 9638443243 in words is "nine billion, six hundred thirty-eight million, four hundred forty-three thousand, two hundred forty-three".