1813307056 has 120 divisors (see below), whose sum is σ = 4042669824. Its totient is φ = 781200000.

The previous prime is 1813307011. The next prime is 1813307071. The reversal of 1813307056 is 6507033181.

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, 12008581 + ... + 12008731.

Almost surely, 2^1813307056 is an apocalyptic number.

1813307056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813307056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021334912).

1813307056 is an abundant number, since it is smaller than the sum of its proper divisors (2229362768).

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

1813307056 is a wasteful number, since it uses less digits than its factorization.

1813307056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1813307056 is about 42582.9432519642. The cubic root of 1813307056 is about 1219.4306794508.

The spelling of 1813307056 in words is "one billion, eight hundred thirteen million, three hundred seven thousand, fifty-six".