2081819287 has 2 divisors, whose sum is σ = 2081819288. Its totient is φ = 2081819286.

The previous prime is 2081819281. The next prime is 2081819357. The reversal of 2081819287 is 7829181802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2081819287 - 2¹⁵ = 2081786519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081819281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040909643 + 1040909644.

It is an arithmetic number, because the mean of its divisors is an integer number (1040909644).

Almost surely, 2^2081819287 is an apocalyptic number.

2081819287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081819287 is an equidigital number, since it uses as much as digits as its factorization.

2081819287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 2081819287 is about 45626.9578977166. The cubic root of 2081819287 is about 1276.8729182127.

The spelling of 2081819287 in words is "two billion, eighty-one million, eight hundred nineteen thousand, two hundred eighty-seven".