2163842806 has 16 divisors (see below), whose sum is σ = 3478424544. Its totient is φ = 1006910784.

The previous prime is 2163842777. The next prime is 2163842809. The reversal of 2163842806 is 6082483612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163842809) 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, 633975 + ... + 637378.

It is an arithmetic number, because the mean of its divisors is an integer number (217401534).

Almost surely, 2^2163842806 is an apocalyptic number.

2163842806 is a deficient number, since it is larger than the sum of its proper divisors (1314581738).

2163842806 is a wasteful number, since it uses less digits than its factorization.

2163842806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271415.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 2163842806 is about 46517.1237932871. The cubic root of 2163842806 is about 1293.4269408429.

The spelling of 2163842806 in words is "two billion, one hundred sixty-three million, eight hundred forty-two thousand, eight hundred six".