2105729519 has 4 divisors (see below), whose sum is σ = 2105835360. Its totient is φ = 2105623680.

The previous prime is 2105729503. The next prime is 2105729539. The reversal of 2105729519 is 9159275012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2105729519 - 2⁴ = 2105729503 is a prime.

It is a super-2 number, since 2×2105729519² = 8868193614375942722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105729539) 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 in 3 ways as a sum of consecutive naturals, for example, 13079 + ... + 66200.

It is an arithmetic number, because the mean of its divisors is an integer number (526458840).

Almost surely, 2^2105729519 is an apocalyptic number.

2105729519 is a deficient number, since it is larger than the sum of its proper divisors (105841).

2105729519 is an equidigital number, since it uses as much as digits as its factorization.

2105729519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105840.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 2105729519 is about 45888.2285450201. The cubic root of 2105729519 is about 1281.7427268991.

The spelling of 2105729519 in words is "two billion, one hundred five million, seven hundred twenty-nine thousand, five hundred nineteen".