2108205543 has 4 divisors (see below), whose sum is σ = 2810940728. Its totient is φ = 1405470360.

The previous prime is 2108205503. The next prime is 2108205557. The reversal of 2108205543 is 3455028012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2108205543 - 2⁹ = 2108205031 is a prime.

It is a super-2 number, since 2×2108205543² = 8889061223071849698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2108205543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108205503) 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, 351367588 + ... + 351367593.

It is an arithmetic number, because the mean of its divisors is an integer number (702735182).

Almost surely, 2^2108205543 is an apocalyptic number.

2108205543 is a deficient number, since it is larger than the sum of its proper divisors (702735185).

2108205543 is an equidigital number, since it uses as much as digits as its factorization.

2108205543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702735184.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2108205543 is about 45915.1994768617. The cubic root of 2108205543 is about 1282.2449095763.

The spelling of 2108205543 in words is "two billion, one hundred eight million, two hundred five thousand, five hundred forty-three".