2118949120 has 72 divisors (see below), whose sum is σ = 5097347640. Its totient is φ = 843939840.

The previous prime is 2118949117. The next prime is 2118949181. The reversal of 2118949120 is 219498112.

It can be written as a sum of positive squares in 4 ways, for example, as 30824704 + 2088124416 = 5552^2 + 45696^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2118949120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305046 + ... + 311914.

It is an arithmetic number, because the mean of its divisors is an integer number (70796495).

Almost surely, 2^2118949120 is an apocalyptic number.

2118949120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2118949120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2548673820).

2118949120 is an abundant number, since it is smaller than the sum of its proper divisors (2978398520).

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

2118949120 is an equidigital number, since it uses as much as digits as its factorization.

2118949120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131 (or 7117 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 2118949120 is about 46032.0444907675. The cubic root of 2118949120 is about 1284.4193594670.

The spelling of 2118949120 in words is "two billion, one hundred eighteen million, nine hundred forty-nine thousand, one hundred twenty".