2686988809 has 12 divisors (see below), whose sum is σ = 2722608000. Its totient is φ = 2651780768.

The previous prime is 2686988747. The next prime is 2686988813. The reversal of 2686988809 is 9088896862.

It is a de Polignac number, because none of the positive numbers 2^k-2686988809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2686988819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4485492 + ... + 4486090.

It is an arithmetic number, because the mean of its divisors is an integer number (226884000).

Almost surely, 2^2686988809 is an apocalyptic number.

It is an amenable number.

2686988809 is a deficient number, since it is larger than the sum of its proper divisors (35619191).

2686988809 is an equidigital number, since it uses as much as digits as its factorization.

2686988809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 64.

The square root of 2686988809 is about 51836.1727850350. The cubic root of 2686988809 is about 1390.2362845564.

The spelling of 2686988809 in words is "two billion, six hundred eighty-six million, nine hundred eighty-eight thousand, eight hundred nine".