1813684224 has 112 divisors (see below), whose sum is σ = 5276636640. Its totient is φ = 549519360.

The previous prime is 1813684217. The next prime is 1813684261. The reversal of 1813684224 is 4224863181.

It is a nude number because it is divisible by every one of its digits.

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, 266982 + ... + 273690.

Almost surely, 2^1813684224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813684224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2638318320).

1813684224 is an abundant number, since it is smaller than the sum of its proper divisors (3462952416).

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

1813684224 is an equidigital number, since it uses as much as digits as its factorization.

1813684224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749 (or 6725 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 1813684224 is about 42587.3716493516. The cubic root of 1813684224 is about 1219.5152208130.

The spelling of 1813684224 in words is "one billion, eight hundred thirteen million, six hundred eighty-four thousand, two hundred twenty-four".