2688318439 has 2 divisors, whose sum is σ = 2688318440. Its totient is φ = 2688318438.

The previous prime is 2688318433. The next prime is 2688318461. The reversal of 2688318439 is 9348138862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2688318439 - 2¹¹ = 2688316391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2688318433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344159219 + 1344159220.

It is an arithmetic number, because the mean of its divisors is an integer number (1344159220).

Almost surely, 2^2688318439 is an apocalyptic number.

2688318439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688318439 is an equidigital number, since it uses as much as digits as its factorization.

2688318439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 52.

The square root of 2688318439 is about 51848.9965090936. The cubic root of 2688318439 is about 1390.4655616620.

The spelling of 2688318439 in words is "two billion, six hundred eighty-eight million, three hundred eighteen thousand, four hundred thirty-nine".