2688111489 has 16 divisors (see below), whose sum is σ = 4157308928. Its totient is φ = 1513136592.

The previous prime is 2688111487. The next prime is 2688111551. The reversal of 2688111489 is 9841118862.

It is not a de Polignac number, because 2688111489 - 2¹ = 2688111487 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2688111487) 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, 953857 + ... + 956670.

It is an arithmetic number, because the mean of its divisors is an integer number (259831808).

Almost surely, 2^2688111489 is an apocalyptic number.

It is an amenable number.

2688111489 is a deficient number, since it is larger than the sum of its proper divisors (1469197439).

2688111489 is a wasteful number, since it uses less digits than its factorization.

2688111489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910604.

The product of its digits is 221184, while the sum is 48.

The square root of 2688111489 is about 51847.0007715008. Note that the first 3 decimals coincide. The cubic root of 2688111489 is about 1390.4298808403.

The spelling of 2688111489 in words is "two billion, six hundred eighty-eight million, one hundred eleven thousand, four hundred eighty-nine".