9988238418 has 16 divisors (see below), whose sum is σ = 20003085696. Its totient is φ = 3324978000.

The previous prime is 9988238413. The next prime is 9988238539. The reversal of 9988238418 is 8148328899.

It is a super-2 number, since 2×9988238418² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9988238413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1103821 + ... + 1112832.

It is an arithmetic number, because the mean of its divisors is an integer number (1250192856).

Almost surely, 2^9988238418 is an apocalyptic number.

9988238418 is an abundant number, since it is smaller than the sum of its proper divisors (10014847278).

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

9988238418 is a wasteful number, since it uses less digits than its factorization.

9988238418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217409.

The product of its digits is 7962624, while the sum is 60.

The square root of 9988238418 is about 99941.1747879721. The cubic root of 9988238418 is about 2153.5897066582.

The spelling of 9988238418 in words is "nine billion, nine hundred eighty-eight million, two hundred thirty-eight thousand, four hundred eighteen".