2118747888 has 160 divisors (see below), whose sum is σ = 6344236800. Its totient is φ = 676166400.

The previous prime is 2118747887. The next prime is 2118747899. The reversal of 2118747888 is 8887478112.

It is a happy number.

2118747888 is a `hidden beast` number, since 2 + 11 + 87 + 478 + 88 = 666.

2118747888 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2118747888² = 8978185225808921088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118747887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1640523 + ... + 1641813.

It is an arithmetic number, because the mean of its divisors is an integer number (39651480).

Almost surely, 2^2118747888 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 2118747888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3172118400).

2118747888 is an abundant number, since it is smaller than the sum of its proper divisors (4225488912).

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

2118747888 is a wasteful number, since it uses less digits than its factorization.

2118747888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1456 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 54.

The square root of 2118747888 is about 46029.8586571803. The cubic root of 2118747888 is about 1284.3786986733.

The spelling of 2118747888 in words is "two billion, one hundred eighteen million, seven hundred forty-seven thousand, eight hundred eighty-eight".