1808931086112 has 72 divisors (see below), whose sum is σ = 4780532370096. Its totient is φ = 598929497344.

The previous prime is 1808931086089. The next prime is 1808931086159. The reversal of 1808931086112 is 2116801398081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1706923 + ... + 2555669.

It is an arithmetic number, because the mean of its divisors is an integer number (66396282918).

Almost surely, 2^{1808931086112} is an apocalyptic number.

1808931086112 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 1808931086112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390266185048).

1808931086112 is an abundant number, since it is smaller than the sum of its proper divisors (2971601283984).

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

1808931086112 is an equidigital number, since it uses as much as digits as its factorization.

1808931086112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849058 (or 848901 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 48.

The spelling of 1808931086112 in words is "one trillion, eight hundred eight billion, nine hundred thirty-one million, eighty-six thousand, one hundred twelve".