9638047318 has 4 divisors (see below), whose sum is σ = 14457070980. Its totient is φ = 4819023658.

The previous prime is 9638047313. The next prime is 9638047319. The reversal of 9638047318 is 8137408369.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8137408369 = 19 ⋅428284651.

It is a super-2 number, since 2×9638047318² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9638047313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2409511828 + ... + 2409511831.

It is an arithmetic number, because the mean of its divisors is an integer number (3614267745).

Almost surely, 2^9638047318 is an apocalyptic number.

9638047318 is a deficient number, since it is larger than the sum of its proper divisors (4819023662).

9638047318 is a wasteful number, since it uses less digits than its factorization.

9638047318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819023661.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 9638047318 is about 98173.5571220683. The cubic root of 9638047318 is about 2128.1211670117.

The spelling of 9638047318 in words is "nine billion, six hundred thirty-eight million, forty-seven thousand, three hundred eighteen".