2105081599 has 2 divisors, whose sum is σ = 2105081600. Its totient is φ = 2105081598.

The previous prime is 2105081597. The next prime is 2105081617. The reversal of 2105081599 is 9951805012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105081599 - 2¹ = 2105081597 is a prime.

Together with 2105081597, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105081597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052540799 + 1052540800.

It is an arithmetic number, because the mean of its divisors is an integer number (1052540800).

Almost surely, 2^2105081599 is an apocalyptic number.

2105081599 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105081599 is an equidigital number, since it uses as much as digits as its factorization.

2105081599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 2105081599 is about 45881.1682392678. The cubic root of 2105081599 is about 1281.6112519667.

The spelling of 2105081599 in words is "two billion, one hundred five million, eighty-one thousand, five hundred ninety-nine".