2118530700 has 720 divisors, whose sum is σ = 8469457920. Its totient is φ = 451008000.

The previous prime is 2118530657. The next prime is 2118530741. The reversal of 2118530700 is 70358112.

2118530700 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 35907271 + ... + 35907329.

It is an arithmetic number, because the mean of its divisors is an integer number (11763136).

Almost surely, 2^2118530700 is an apocalyptic number.

2118530700 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 2118530700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4234728960).

2118530700 is an abundant number, since it is smaller than the sum of its proper divisors (6350927220).

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

2118530700 is a wasteful number, since it uses less digits than its factorization.

2118530700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 2118530700 is about 46027.4993889523. The cubic root of 2118530700 is about 1284.3348109328.

Adding to 2118530700 its reverse (70358112), we get a palindrome (2188888812).

The spelling of 2118530700 in words is "two billion, one hundred eighteen million, five hundred thirty thousand, seven hundred".