2118600000 has 504 divisors, whose sum is σ = 8357652576. Its totient is φ = 508800000.

The previous prime is 2118599957. The next prime is 2118600007. The reversal of 2118600000 is 68112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118600007) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19799947 + ... + 19800053.

It is an arithmetic number, because the mean of its divisors is an integer number (16582644).

Almost surely, 2^2118600000 is an apocalyptic number.

2118600000 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 2118600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4178826288).

2118600000 is an abundant number, since it is smaller than the sum of its proper divisors (6239052576).

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

2118600000 is a wasteful number, since it uses less digits than its factorization.

2118600000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2118600000 is about 46028.2521936256. The cubic root of 2118600000 is about 1284.3488148888.

Adding to 2118600000 its reverse (68112), we get a palindrome (2118668112).

The spelling of 2118600000 in words is "two billion, one hundred eighteen million, six hundred thousand".