2089691563 has 2 divisors, whose sum is σ = 2089691564. Its totient is φ = 2089691562.

The previous prime is 2089691557. The next prime is 2089691621. The reversal of 2089691563 is 3651969802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2089691563 - 2⁵ = 2089691531 is a prime.

It is not a weakly prime, because it can be changed into another prime (2089691543) 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, 1044845781 + 1044845782.

It is an arithmetic number, because the mean of its divisors is an integer number (1044845782).

Almost surely, 2^2089691563 is an apocalyptic number.

2089691563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2089691563 is an equidigital number, since it uses as much as digits as its factorization.

2089691563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 2089691563 is about 45713.1443132060. The cubic root of 2089691563 is about 1278.4803667917.

The spelling of 2089691563 in words is "two billion, eighty-nine million, six hundred ninety-one thousand, five hundred sixty-three".