19338055110638 has 12 divisors (see below), whose sum is σ = 31883818137360. Its totient is φ = 8790025050180.

The previous prime is 19338055110631. The next prime is 19338055110677. The reversal of 19338055110638 is 83601155083391.

It is a self number, because there is not a number n which added to its sum of digits gives 19338055110638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19338055110631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39954659078 + ... + 39954659561.

It is an arithmetic number, because the mean of its divisors is an integer number (2656984844780).

Almost surely, 2^{19338055110638} is an apocalyptic number.

19338055110638 is a deficient number, since it is larger than the sum of its proper divisors (12545763026722).

19338055110638 is a wasteful number, since it uses less digits than its factorization.

19338055110638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79909318663 (or 79909318652 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 19338055110638 in words is "nineteen trillion, three hundred thirty-eight billion, fifty-five million, one hundred ten thousand, six hundred thirty-eight".