2118897882 has 24 divisors (see below), whose sum is σ = 4591795104. Its totient is φ = 706168584.

The previous prime is 2118897881. The next prime is 2118897889. The reversal of 2118897882 is 2887988112.

It is not an unprimeable number, because it can be changed into a prime (2118897881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172683 + ... + 184545.

It is an arithmetic number, because the mean of its divisors is an integer number (191324796).

Almost surely, 2^2118897882 is an apocalyptic number.

2118897882 is an abundant number, since it is smaller than the sum of its proper divisors (2472897222).

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

2118897882 is a wasteful number, since it uses less digits than its factorization.

2118897882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21794 (or 21791 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 54.

The square root of 2118897882 is about 46031.4879403219. The cubic root of 2118897882 is about 1284.4090065978.

The spelling of 2118897882 in words is "two billion, one hundred eighteen million, eight hundred ninety-seven thousand, eight hundred eighty-two".