2686988851 has 2 divisors, whose sum is σ = 2686988852. Its totient is φ = 2686988850.

The previous prime is 2686988831. The next prime is 2686988867. The reversal of 2686988851 is 1588896862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2686988851 - 2⁵ = 2686988819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2686988851.

It is not a weakly prime, because it can be changed into another prime (2686988831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343494425 + 1343494426.

It is an arithmetic number, because the mean of its divisors is an integer number (1343494426).

Almost surely, 2^2686988851 is an apocalyptic number.

2686988851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2686988851 is an equidigital number, since it uses as much as digits as its factorization.

2686988851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13271040, while the sum is 61.

The square root of 2686988851 is about 51836.1731901575. The cubic root of 2686988851 is about 1390.2362917999.

The spelling of 2686988851 in words is "two billion, six hundred eighty-six million, nine hundred eighty-eight thousand, eight hundred fifty-one".