2118618788 has 96 divisors (see below), whose sum is σ = 4618951680. Its totient is φ = 835920000.

The previous prime is 2118618781. The next prime is 2118618793. The reversal of 2118618788 is 8878168112.

It is not an unprimeable number, because it can be changed into a prime (2118618781) 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, 1640423 + ... + 1641713.

It is an arithmetic number, because the mean of its divisors is an integer number (48114080).

Almost surely, 2^2118618788 is an apocalyptic number.

It is an amenable number.

2118618788 is an abundant number, since it is smaller than the sum of its proper divisors (2500332892).

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

2118618788 is a wasteful number, since it uses less digits than its factorization.

2118618788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489 (or 1487 counting only the distinct ones).

The product of its digits is 344064, while the sum is 50.

The square root of 2118618788 is about 46028.4562852156. The cubic root of 2118618788 is about 1284.3526114642.

The spelling of 2118618788 in words is "two billion, one hundred eighteen million, six hundred eighteen thousand, seven hundred eighty-eight".