18006241812 has 96 divisors (see below), whose sum is σ = 46322451840. Its totient is φ = 5409953280.

The previous prime is 18006241763. The next prime is 18006241837. The reversal of 18006241812 is 21814260081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1315918 + ... + 1329530.

It is an arithmetic number, because the mean of its divisors is an integer number (482525540).

Almost surely, 2^18006241812 is an apocalyptic number.

18006241812 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 18006241812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23161225920).

18006241812 is an abundant number, since it is smaller than the sum of its proper divisors (28316210028).

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

18006241812 is a wasteful number, since it uses less digits than its factorization.

18006241812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13833 (or 13831 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 18006241812 in words is "eighteen billion, six million, two hundred forty-one thousand, eight hundred twelve".