19444444442318 has 24 divisors (see below), whose sum is σ = 34118116547400. Its totient is φ = 8286778390128.

The previous prime is 19444444442317. The next prime is 19444444442323. The reversal of 19444444442318 is 81324444444491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19444444442317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554207873 + ... + 554242956.

It is an arithmetic number, because the mean of its divisors is an integer number (1421588189475).

Almost surely, 2^{19444444442318} is an apocalyptic number.

19444444442318 is a deficient number, since it is larger than the sum of its proper divisors (14673672105082).

19444444442318 is a wasteful number, since it uses less digits than its factorization.

19444444442318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108451024 (or 1108451017 counting only the distinct ones).

The product of its digits is 28311552, while the sum is 56.

The spelling of 19444444442318 in words is "nineteen trillion, four hundred forty-four billion, four hundred forty-four million, four hundred forty-two thousand, three hundred eighteen".