2086398659 has 2 divisors, whose sum is σ = 2086398660. Its totient is φ = 2086398658.

The previous prime is 2086398637. The next prime is 2086398679. The reversal of 2086398659 is 9568936802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2086398659 is a prime.

It is not a weakly prime, because it can be changed into another prime (2086398679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043199329 + 1043199330.

It is an arithmetic number, because the mean of its divisors is an integer number (1043199330).

Almost surely, 2^2086398659 is an apocalyptic number.

2086398659 is a deficient number, since it is larger than the sum of its proper divisors (1).

2086398659 is an equidigital number, since it uses as much as digits as its factorization.

2086398659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The square root of 2086398659 is about 45677.1130764631. The cubic root of 2086398659 is about 1277.8084771483.

The spelling of 2086398659 in words is "two billion, eighty-six million, three hundred ninety-eight thousand, six hundred fifty-nine".