2118018600 has 144 divisors (see below), whose sum is σ = 7135614720. Its totient is φ = 563011200.

The previous prime is 2118018599. The next prime is 2118018601. The reversal of 2118018600 is 68108112.

It is an interprime number because it is at equal distance from previous prime (2118018599) and next prime (2118018601).

It is not an unprimeable number, because it can be changed into a prime (2118018601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 622905 + ... + 626295.

It is an arithmetic number, because the mean of its divisors is an integer number (49552880).

Almost surely, 2^2118018600 is an apocalyptic number.

2118018600 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 2118018600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3567807360).

2118018600 is an abundant number, since it is smaller than the sum of its proper divisors (5017596120).

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

2118018600 is a wasteful number, since it uses less digits than its factorization.

2118018600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760 (or 3748 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 2118018600 is about 46021.9360740071. The cubic root of 2118018600 is about 1284.2313176865.

The spelling of 2118018600 in words is "two billion, one hundred eighteen million, eighteen thousand, six hundred".