2688119281 has 6 divisors (see below), whose sum is σ = 2706303782. Its totient is φ = 2670056160.

The previous prime is 2688119251. The next prime is 2688119311. The reversal of 2688119281 is 1829118862.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2688119251) and next prime (2688119311).

It can be written as a sum of positive squares in 3 ways, for example, as 44102881 + 2644016400 = 6641^2 + 51420^2 .

It is not a de Polignac number, because 2688119281 - 2²⁹ = 2151248369 is a prime.

It is a super-2 number, since 2×2688119281² = 14451970537767913922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2688119251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38340 + ... + 82741.

Almost surely, 2^2688119281 is an apocalyptic number.

It is an amenable number.

2688119281 is a deficient number, since it is larger than the sum of its proper divisors (18184501).

2688119281 is an equidigital number, since it uses as much as digits as its factorization.

2688119281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121379 (or 121230 counting only the distinct ones).

The product of its digits is 110592, while the sum is 46.

The square root of 2688119281 is about 51847.0759156194. The cubic root of 2688119281 is about 1390.4312243138.

The spelling of 2688119281 in words is "two billion, six hundred eighty-eight million, one hundred nineteen thousand, two hundred eighty-one".