2005108823 has 4 divisors (see below), whose sum is σ = 2006656080. Its totient is φ = 2003561568.

The previous prime is 2005108811. The next prime is 2005108837. The reversal of 2005108823 is 3288015002.

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

It is a cyclic number.

It is not a de Polignac number, because 2005108823 - 2⁶ = 2005108759 is a prime.

It is a super-2 number, since 2×2005108823² = 8040922784144890658, 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 (2005108883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771683 + ... + 774276.

It is an arithmetic number, because the mean of its divisors is an integer number (501664020).

Almost surely, 2^2005108823 is an apocalyptic number.

2005108823 is a deficient number, since it is larger than the sum of its proper divisors (1547257).

2005108823 is a wasteful number, since it uses less digits than its factorization.

2005108823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547256.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2005108823 is about 44778.4414981138. The cubic root of 2005108823 is about 1260.9929233500.

The spelling of 2005108823 in words is "two billion, five million, one hundred eight thousand, eight hundred twenty-three".