2105708543 has 8 divisors (see below), whose sum is σ = 2130120960. Its totient is φ = 2081388960.

The previous prime is 2105708513. The next prime is 2105708639. The reversal of 2105708543 is 3458075012.

It is a happy number.

It is a Cunningham number, because it is equal to 45888²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105708543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105708503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22946 + ... + 68832.

It is an arithmetic number, because the mean of its divisors is an integer number (266265120).

Almost surely, 2^2105708543 is an apocalyptic number.

2105708543 is a deficient number, since it is larger than the sum of its proper divisors (24412417).

2105708543 is a wasteful number, since it uses less digits than its factorization.

2105708543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46417.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 2105708543 is about 45887.9999891039. Note that the first 4 decimals coincide. The cubic root of 2105708543 is about 1281.7384709038.

The spelling of 2105708543 in words is "two billion, one hundred five million, seven hundred eight thousand, five hundred forty-three".