1809925056 has 42 divisors (see below), whose sum is σ = 5187825032. Its totient is φ = 603308160.

The previous prime is 1809925031. The next prime is 1809925057. The reversal of 1809925056 is 6505299081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809925057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1570540 + ... + 1571691.

Almost surely, 2^1809925056 is an apocalyptic number.

1809925056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1809925056 is an abundant number, since it is smaller than the sum of its proper divisors (3377899976).

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

1809925056 is a wasteful number, since it uses less digits than its factorization.

1809925056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142249 (or 3142236 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 1809925056 is about 42543.2139829609. The cubic root of 1809925056 is about 1218.6720873585.

The spelling of 1809925056 in words is "one billion, eight hundred nine million, nine hundred twenty-five thousand, fifty-six".