2163836805 has 32 divisors (see below), whose sum is σ = 3730696704. Its totient is φ = 1064633856.

The previous prime is 2163836791. The next prime is 2163836813. The reversal of 2163836805 is 5086383612.

It is not a de Polignac number, because 2163836805 - 2⁹ = 2163836293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633412 + ... + 636818.

It is an arithmetic number, because the mean of its divisors is an integer number (116584272).

Almost surely, 2^2163836805 is an apocalyptic number.

It is an amenable number.

2163836805 is a deficient number, since it is larger than the sum of its proper divisors (1566859899).

2163836805 is a wasteful number, since it uses less digits than its factorization.

2163836805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6685.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 2163836805 is about 46517.0592901142. The cubic root of 2163836805 is about 1293.4257451519.

The spelling of 2163836805 in words is "two billion, one hundred sixty-three million, eight hundred thirty-six thousand, eight hundred five".