1806984444 has 24 divisors (see below), whose sum is σ = 4263673680. Its totient is φ = 595560064.

The previous prime is 1806984437. The next prime is 1806984457. The reversal of 1806984444 is 4444896081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1806984393 and 1806984402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844899 + ... + 847034.

It is an arithmetic number, because the mean of its divisors is an integer number (177653070).

Almost surely, 2^1806984444 is an apocalyptic number.

It is an amenable number.

1806984444 is an abundant number, since it is smaller than the sum of its proper divisors (2456689236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1806984444 is a wasteful number, since it uses less digits than its factorization.

1806984444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692029 (or 1692027 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The square root of 1806984444 is about 42508.6396394898. The cubic root of 1806984444 is about 1218.0117314128.

The spelling of 1806984444 in words is "one billion, eight hundred six million, nine hundred eighty-four thousand, four hundred forty-four".