18276444983944 has 32 divisors (see below), whose sum is σ = 39449677927680. Its totient is φ = 7775588686464.

The previous prime is 18276444983899. The next prime is 18276444983947. The reversal of 18276444983944 is 44938944467281.

It is a happy number.

It is a super-2 number, since 2×18276444983944² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18276444983947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191105792 + ... + 1191121135.

It is an arithmetic number, because the mean of its divisors is an integer number (1232802435240).

Almost surely, 2^{18276444983944} is an apocalyptic number.

18276444983944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18276444983944 is an abundant number, since it is smaller than the sum of its proper divisors (21173232943736).

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

18276444983944 is a wasteful number, since it uses less digits than its factorization.

18276444983944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382227077 (or 2382227073 counting only the distinct ones).

The product of its digits is 1337720832, while the sum is 73.

The spelling of 18276444983944 in words is "eighteen trillion, two hundred seventy-six billion, four hundred forty-four million, nine hundred eighty-three thousand, nine hundred forty-four".