2180368818 has 48 divisors (see below), whose sum is σ = 4943417856. Its totient is φ = 693696960.

The previous prime is 2180368783. The next prime is 2180368829. The reversal of 2180368818 is 8188630812.

2180368818 is digitally balanced in base 2 and base 4, because in such bases 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 23 ways as a sum of consecutive naturals, for example, 13971 + ... + 67497.

It is an arithmetic number, because the mean of its divisors is an integer number (102987872).

Almost surely, 2^2180368818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2180368818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2471708928).

2180368818 is an abundant number, since it is smaller than the sum of its proper divisors (2763049038).

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

2180368818 is a wasteful number, since it uses less digits than its factorization.

2180368818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53639 (or 53636 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 2180368818 is about 46694.4195595148. The cubic root of 2180368818 is about 1296.7113757146.

The spelling of 2180368818 in words is "two billion, one hundred eighty million, three hundred sixty-eight thousand, eight hundred eighteen".