1806805548844 has 24 divisors (see below), whose sum is σ = 3230161966080. Its totient is φ = 883913768016.

The previous prime is 1806805548841. The next prime is 1806805548881. The reversal of 1806805548844 is 4488455086081.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1806805548841) 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 7 ways as a sum of consecutive naturals, for example, 831364 + ... + 2074795.

It is an arithmetic number, because the mean of its divisors is an integer number (134590081920).

Almost surely, 2^{1806805548844} is an apocalyptic number.

It is an amenable number.

1806805548844 is a deficient number, since it is larger than the sum of its proper divisors (1423356417236).

1806805548844 is a wasteful number, since it uses less digits than its factorization.

1806805548844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909517 (or 2909515 counting only the distinct ones).

The product of its (nonzero) digits is 39321600, while the sum is 61.

The spelling of 1806805548844 in words is "one trillion, eight hundred six billion, eight hundred five million, five hundred forty-eight thousand, eight hundred forty-four".