1809013982400 has 504 divisors, whose sum is σ = 6952770976320. Its totient is φ = 444364062720.

The previous prime is 1809013982393. The next prime is 1809013982437. The reversal of 1809013982400 is 42893109081.

1809013982400 is a `hidden beast` number, since 1 + 80 + 90 + 1 + 3 + 9 + 82 + 400 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11426986 + ... + 11584214.

Almost surely, 2^{1809013982400} is an apocalyptic number.

1809013982400 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 1809013982400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3476385488160).

1809013982400 is an abundant number, since it is smaller than the sum of its proper divisors (5143756993920).

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

1809013982400 is a wasteful number, since it uses less digits than its factorization.

1809013982400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157321 (or 157303 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 1809013982400 in words is "one trillion, eight hundred nine billion, thirteen million, nine hundred eighty-two thousand, four hundred".