1805860255328 has 48 divisors (see below), whose sum is σ = 3632969055744. Its totient is φ = 883223007360.

The previous prime is 1805860255327. The next prime is 1805860255349. The reversal of 1805860255328 is 8235520685081.

It is a Cunningham number, because it is equal to 1343823²-1.

It is a super-2 number, since 2×1805860255328² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1805860255328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1805860255327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351693 + ... + 3023603.

It is an arithmetic number, because the mean of its divisors is an integer number (75686855328).

Almost surely, 2^{1805860255328} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1805860255328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816484527872).

1805860255328 is an abundant number, since it is smaller than the sum of its proper divisors (1827108800416).

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

1805860255328 is a wasteful number, since it uses less digits than its factorization.

1805860255328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673755 (or 673747 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 53.

The spelling of 1805860255328 in words is "one trillion, eight hundred five billion, eight hundred sixty million, two hundred fifty-five thousand, three hundred twenty-eight".