2688838239 has 8 divisors (see below), whose sum is σ = 3592604160. Its totient is φ = 1788815576.

The previous prime is 2688838223. The next prime is 2688838247. The reversal of 2688838239 is 9328388862.

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

It is a cyclic number.

It is not a de Polignac number, because 2688838239 - 2⁴ = 2688838223 is a prime.

It is a super-2 number, since 2×2688838239² = 14459702151017242242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688838279) 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, 934137 + ... + 937010.

It is an arithmetic number, because the mean of its divisors is an integer number (449075520).

Almost surely, 2^2688838239 is an apocalyptic number.

2688838239 is a deficient number, since it is larger than the sum of its proper divisors (903765921).

2688838239 is a wasteful number, since it uses less digits than its factorization.

2688838239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871629.

The product of its digits is 7962624, while the sum is 57.

The square root of 2688838239 is about 51854.0088999877. The cubic root of 2688838239 is about 1390.5551737419. Note that the first 3 decimals are identical.

The spelling of 2688838239 in words is "two billion, six hundred eighty-eight million, eight hundred thirty-eight thousand, two hundred thirty-nine".