1808043800 has 192 divisors, whose sum is σ = 4681843200. Its totient is φ = 646272000.

The previous prime is 1808043793. The next prime is 1808043821. The reversal of 1808043800 is 83408081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11973725 + ... + 11973875.

It is an arithmetic number, because the mean of its divisors is an integer number (24384600).

Almost surely, 2^1808043800 is an apocalyptic number.

1808043800 is a gapful number since it is divisible by the number (10) 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 1808043800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2340921600).

1808043800 is an abundant number, since it is smaller than the sum of its proper divisors (2873799400).

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

1808043800 is a wasteful number, since it uses less digits than its factorization.

1808043800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1808043800 is about 42521.0982924948. The cubic root of 1808043800 is about 1218.2497072610.

The spelling of 1808043800 in words is "one billion, eight hundred eight million, forty-three thousand, eight hundred".