8991908118 has 64 divisors (see below), whose sum is σ = 21481344000. Its totient is φ = 2779119072.

The previous prime is 8991908083. The next prime is 8991908119. The reversal of 8991908118 is 8118091998.

8991908118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991908119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45013 + ... + 141456.

It is an arithmetic number, because the mean of its divisors is an integer number (335646000).

Almost surely, 2^8991908118 is an apocalyptic number.

8991908118 is an abundant number, since it is smaller than the sum of its proper divisors (12489435882).

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

8991908118 is a wasteful number, since it uses less digits than its factorization.

8991908118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186546 (or 186540 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 54.

The square root of 8991908118 is about 94825.6722517695. The cubic root of 8991908118 is about 2079.4602363910.

The spelling of 8991908118 in words is "eight billion, nine hundred ninety-one million, nine hundred eight thousand, one hundred eighteen".