1806841728 has 160 divisors (see below), whose sum is σ = 5611660560. Its totient is φ = 576018432.

The previous prime is 1806841711. The next prime is 1806841739. The reversal of 1806841728 is 8271486081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 234676 + ... + 242252.

Almost surely, 2^1806841728 is an apocalyptic number.

1806841728 is a gapful number since it is divisible by the number (18) 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 1806841728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2805830280).

1806841728 is an abundant number, since it is smaller than the sum of its proper divisors (3804818832).

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

1806841728 is an equidigital number, since it uses as much as digits as its factorization.

1806841728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626 (or 7605 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1806841728 is about 42506.9609358279. The cubic root of 1806841728 is about 1217.9796642968.

The spelling of 1806841728 in words is "one billion, eight hundred six million, eight hundred forty-one thousand, seven hundred twenty-eight".