2101619563 has 2 divisors, whose sum is σ = 2101619564. Its totient is φ = 2101619562.

The previous prime is 2101619561. The next prime is 2101619579. The reversal of 2101619563 is 3659161012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101619563 - 2¹ = 2101619561 is a prime.

Together with 2101619561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2101619561) 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, 1050809781 + 1050809782.

It is an arithmetic number, because the mean of its divisors is an integer number (1050809782).

Almost surely, 2^2101619563 is an apocalyptic number.

2101619563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101619563 is an equidigital number, since it uses as much as digits as its factorization.

2101619563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 2101619563 is about 45843.4244248834. The cubic root of 2101619563 is about 1280.9082833522.

The spelling of 2101619563 in words is "two billion, one hundred one million, six hundred nineteen thousand, five hundred sixty-three".