1801802840832 has 216 divisors, whose sum is σ = 5434992239040. Its totient is φ = 573483663360.

The previous prime is 1801802840809. The next prime is 1801802840833. The reversal of 1801802840832 is 2380482081081.

It is a happy number.

1801802840832 is a `hidden beast` number, since 18 + 0 + 180 + 28 + 408 + 32 = 666.

It is not an unprimeable number, because it can be changed into a prime (1801802840833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4236894 + ... + 4642722.

Almost surely, 2^{1801802840832} is an apocalyptic number.

1801802840832 is a gapful number since it is divisible by the number (12) 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 1801802840832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2717496119520).

1801802840832 is an abundant number, since it is smaller than the sum of its proper divisors (3633189398208).

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

1801802840832 is a wasteful number, since it uses less digits than its factorization.

1801802840832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405939 (or 405922 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The spelling of 1801802840832 in words is "one trillion, eight hundred one billion, eight hundred two million, eight hundred forty thousand, eight hundred thirty-two".