2118700881 has 40 divisors (see below), whose sum is σ = 3476088000. Its totient is φ = 1275363360.

The previous prime is 2118700853. The next prime is 2118700889. The reversal of 2118700881 is 1880078112.

It is not a de Polignac number, because 2118700881 - 2⁹ = 2118700369 is a prime.

It is a super-2 number, since 2×2118700881² = 8977786846300352322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2118700889) 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 39 ways as a sum of consecutive naturals, for example, 124780 + ... + 140738.

It is an arithmetic number, because the mean of its divisors is an integer number (86902200).

Almost surely, 2^2118700881 is an apocalyptic number.

It is an amenable number.

2118700881 is a deficient number, since it is larger than the sum of its proper divisors (1357387119).

2118700881 is a wasteful number, since it uses less digits than its factorization.

2118700881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16131 (or 16122 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The square root of 2118700881 is about 46029.3480401363. The cubic root of 2118700881 is about 1284.3692001017.

Adding to 2118700881 its reverse (1880078112), we get a palindrome (3998778993).

The spelling of 2118700881 in words is "two billion, one hundred eighteen million, seven hundred thousand, eight hundred eighty-one".