1806985384472 has 16 divisors (see below), whose sum is σ = 3497391067200. Its totient is φ = 874347766560.

The previous prime is 1806985384439. The next prime is 1806985384489. The reversal of 1806985384472 is 2744835896081.

It is a junction number, because it is equal to n+sod(n) for n = 1806985384399 and 1806985384408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643115447 + ... + 3643115942.

It is an arithmetic number, because the mean of its divisors is an integer number (218586941700).

It is a 1-persistent number, because it is pandigital, but 2⋅1806985384472 = 3613970768944 is not.

Almost surely, 2^{1806985384472} is an apocalyptic number.

It is an amenable number.

1806985384472 is a deficient number, since it is larger than the sum of its proper divisors (1690405682728).

1806985384472 is a wasteful number, since it uses less digits than its factorization.

1806985384472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7286231426 (or 7286231422 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 1806985384472 in words is "one trillion, eight hundred six billion, nine hundred eighty-five million, three hundred eighty-four thousand, four hundred seventy-two".