1805085870848 has 72 divisors (see below), whose sum is σ = 3880992861648. Its totient is φ = 832964308992.

The previous prime is 1805085870811. The next prime is 1805085870853. The reversal of 1805085870848 is 8480785805081.

It is a super-2 number, since 2×1805085870848² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19299011 + ... + 19392317.

It is an arithmetic number, because the mean of its divisors is an integer number (53902678634).

Almost surely, 2^{1805085870848} 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 1805085870848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940496430824).

1805085870848 is an abundant number, since it is smaller than the sum of its proper divisors (2075906990800).

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

1805085870848 is an equidigital number, since it uses as much as digits as its factorization.

1805085870848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99149 (or 99135 counting only the distinct ones).

The product of its (nonzero) digits is 22937600, while the sum is 62.

The spelling of 1805085870848 in words is "one trillion, eight hundred five billion, eighty-five million, eight hundred seventy thousand, eight hundred forty-eight".