2183118728 has 64 divisors (see below), whose sum is σ = 4768488960. Its totient is φ = 917692416.

The previous prime is 2183118719. The next prime is 2183118739. The reversal of 2183118728 is 8278113812.

2183118728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 787601 + ... + 790367.

It is an arithmetic number, because the mean of its divisors is an integer number (74507640).

Almost surely, 2^2183118728 is an apocalyptic number.

2183118728 is a gapful number since it is divisible by the number (28) 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 2183118728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2384244480).

2183118728 is an abundant number, since it is smaller than the sum of its proper divisors (2585370232).

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

2183118728 is a wasteful number, since it uses less digits than its factorization.

2183118728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046 (or 3042 counting only the distinct ones).

The product of its digits is 43008, while the sum is 41.

The square root of 2183118728 is about 46723.8560908665. The cubic root of 2183118728 is about 1297.2562898754.

The spelling of 2183118728 in words is "two billion, one hundred eighty-three million, one hundred eighteen thousand, seven hundred twenty-eight".