2688526139 has 8 divisors (see below), whose sum is σ = 2942801232. Its totient is φ = 2441031840.

The previous prime is 2688526129. The next prime is 2688526213. The reversal of 2688526139 is 9316258862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2688526139 - 2⁸ = 2688525883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2688526129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694369 + ... + 1695954.

It is an arithmetic number, because the mean of its divisors is an integer number (367850154).

Almost surely, 2^2688526139 is an apocalyptic number.

2688526139 is a deficient number, since it is larger than the sum of its proper divisors (254275093).

2688526139 is a wasteful number, since it uses less digits than its factorization.

2688526139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390397.

The product of its digits is 1244160, while the sum is 50.

The square root of 2688526139 is about 51850.9994021330. Note that the first 3 decimals coincide. The cubic root of 2688526139 is about 1390.5013699521.

The spelling of 2688526139 in words is "two billion, six hundred eighty-eight million, five hundred twenty-six thousand, one hundred thirty-nine".