1806985384473 has 8 divisors (see below), whose sum is σ = 2409328931200. Its totient is φ = 1204649380368.

The previous prime is 1806985384439. The next prime is 1806985384489. The reversal of 1806985384473 is 3744835896081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1806985384473 - 2²⁹ = 1806448513561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1806985384403) 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, 1300738 + ... + 2303451.

It is an arithmetic number, because the mean of its divisors is an integer number (301166116400).

Almost surely, 2^{1806985384473} is an apocalyptic number.

It is an amenable number.

1806985384473 is a deficient number, since it is larger than the sum of its proper divisors (602343546727).

1806985384473 is a wasteful number, since it uses less digits than its factorization.

1806985384473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771311.

The product of its (nonzero) digits is 139345920, while the sum is 66.

The spelling of 1806985384473 in words is "one trillion, eight hundred six billion, nine hundred eighty-five million, three hundred eighty-four thousand, four hundred seventy-three".