1803281040 has 240 divisors, whose sum is σ = 6699214080. Its totient is φ = 431032320.

The previous prime is 1803281027. The next prime is 1803281047. The reversal of 1803281040 is 401823081.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 1803280995 and 1803281013.

It is not an unprimeable number, because it can be changed into a prime (1803281047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 576601 + ... + 579719.

It is an arithmetic number, because the mean of its divisors is an integer number (27913392).

Almost surely, 2^1803281040 is an apocalyptic number.

1803281040 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 1803281040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3349607040).

1803281040 is an abundant number, since it is smaller than the sum of its proper divisors (4895933040).

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

1803281040 is a wasteful number, since it uses less digits than its factorization.

1803281040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222 (or 3213 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1803281040 is about 42465.0566937099. The cubic root of 1803281040 is about 1217.1790596727.

The spelling of 1803281040 in words is "one billion, eight hundred three million, two hundred eighty-one thousand, forty".