2118806208 has 112 divisors (see below), whose sum is σ = 6331325920. Its totient is φ = 694656000.

The previous prime is 2118806177. The next prime is 2118806219. The reversal of 2118806208 is 8026088112.

2118806208 is a `hidden beast` number, since 21 + 1 + 8 + 8 + 0 + 620 + 8 = 666.

It is a super-3 number, since 3×2118806208³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95358 + ... + 115458.

Almost surely, 2^2118806208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2118806208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3165662960).

2118806208 is an abundant number, since it is smaller than the sum of its proper divisors (4212519712).

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

2118806208 is a wasteful number, since it uses less digits than its factorization.

2118806208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20183 (or 20167 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 2118806208 is about 46030.4921546577. The cubic root of 2118806208 is about 1284.3904830357.

The spelling of 2118806208 in words is "two billion, one hundred eighteen million, eight hundred six thousand, two hundred eight".