18334681444 has 12 divisors (see below), whose sum is σ = 32101259904. Its totient is φ = 9162892904.

The previous prime is 18334681439. The next prime is 18334681451. The reversal of 18334681444 is 44418643381.

It is a junction number, because it is equal to n+sod(n) for n = 18334681394 and 18334681403.

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 3 ways as a sum of consecutive naturals, for example, 1102672 + ... + 1119175.

It is an arithmetic number, because the mean of its divisors is an integer number (2675104992).

Almost surely, 2^18334681444 is an apocalyptic number.

It is an amenable number.

18334681444 is a deficient number, since it is larger than the sum of its proper divisors (13766578460).

18334681444 is a wasteful number, since it uses less digits than its factorization.

18334681444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223914 (or 2223912 counting only the distinct ones).

The product of its digits is 884736, while the sum is 46.

The spelling of 18334681444 in words is "eighteen billion, three hundred thirty-four million, six hundred eighty-one thousand, four hundred forty-four".