2118565488 has 80 divisors (see below), whose sum is σ = 5901733376. Its totient is φ = 651006720.

The previous prime is 2118565481. The next prime is 2118565511. The reversal of 2118565488 is 8845658112.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118565481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601653 + ... + 605163.

Almost surely, 2^2118565488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2118565488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2950866688).

2118565488 is an abundant number, since it is smaller than the sum of its proper divisors (3783167888).

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

2118565488 is a wasteful number, since it uses less digits than its factorization.

2118565488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 4496 counting only the distinct ones).

The product of its digits is 614400, while the sum is 48.

The square root of 2118565488 is about 46027.8772919195. The cubic root of 2118565488 is about 1284.3418408356.

The spelling of 2118565488 in words is "two billion, one hundred eighteen million, five hundred sixty-five thousand, four hundred eighty-eight".