1803481355520 has 1440 divisors, whose sum is σ = 7598743004160. Its totient is φ = 404182794240.

The previous prime is 1803481355483. The next prime is 1803481355549. The reversal of 1803481355520 is 255531843081.

1803481355520 is a `hidden beast` number, since 1 + 80 + 3 + 4 + 8 + 13 + 5 + 552 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 710310411 + ... + 710312949.

It is an arithmetic number, because the mean of its divisors is an integer number (5276904864).

Almost surely, 2^{1803481355520} is an apocalyptic number.

1803481355520 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 1803481355520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3799371502080).

1803481355520 is an abundant number, since it is smaller than the sum of its proper divisors (5795261648640).

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

1803481355520 is a wasteful number, since it uses less digits than its factorization.

1803481355520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 1803481355520 in words is "one trillion, eight hundred three billion, four hundred eighty-one million, three hundred fifty-five thousand, five hundred twenty".