18300131444 has 12 divisors (see below), whose sum is σ = 36600262944. Its totient is φ = 7842913464.

The previous prime is 18300131387. The next prime is 18300131449. The reversal of 18300131444 is 44413100381.

It is a happy number.

18300131444 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18300131449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326788034 + ... + 326788089.

It is an arithmetic number, because the mean of its divisors is an integer number (3050021912).

Almost surely, 2^18300131444 is an apocalyptic number.

18300131444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18300131444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18300131444 is a wasteful number, since it uses less digits than its factorization.

18300131444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653576134 (or 653576132 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 18300131444 in words is "eighteen billion, three hundred million, one hundred thirty-one thousand, four hundred forty-four".