1809499228056 has 96 divisors (see below), whose sum is σ = 5442773922000. Its totient is φ = 556768982016.

The previous prime is 1809499227983. The next prime is 1809499228081. The reversal of 1809499228056 is 6508229949081.

1809499228056 is a `hidden beast` number, since 18 + 0 + 9 + 499 + 2 + 2 + 80 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1809499227984 and 1809499228002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24748441 + ... + 24821448.

Almost surely, 2^{1809499228056} is an apocalyptic number.

It is an amenable number.

1809499228056 is an abundant number, since it is smaller than the sum of its proper divisors (3633274693944).

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

1809499228056 is a wasteful number, since it uses less digits than its factorization.

1809499228056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49569930 (or 49569907 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 1809499228056 in words is "one trillion, eight hundred nine billion, four hundred ninety-nine million, two hundred twenty-eight thousand, fifty-six".