2081594987 has 2 divisors, whose sum is σ = 2081594988. Its totient is φ = 2081594986.

The previous prime is 2081594953. The next prime is 2081595011. The reversal of 2081594987 is 7894951802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2081594987 is a prime.

It is not a weakly prime, because it can be changed into another prime (2081594587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040797493 + 1040797494.

It is an arithmetic number, because the mean of its divisors is an integer number (1040797494).

Almost surely, 2^2081594987 is an apocalyptic number.

2081594987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081594987 is an equidigital number, since it uses as much as digits as its factorization.

2081594987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The square root of 2081594987 is about 45624.4998547929. The cubic root of 2081594987 is about 1276.8270588236.

The spelling of 2081594987 in words is "two billion, eighty-one million, five hundred ninety-four thousand, nine hundred eighty-seven".