138186119444 has 24 divisors (see below), whose sum is σ = 243027574440. Its totient is φ = 68750032896.

The previous prime is 138186119441. The next prime is 138186119551. The reversal of 138186119444 is 444911681831.

It can be written as a sum of positive squares in 4 ways, for example, as 65387604100 + 72798515344 = 255710^2 + 269812^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138186119392 and 138186119401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138186119441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1510004 + ... + 1598900.

It is an arithmetic number, because the mean of its divisors is an integer number (10126148935).

Almost surely, 2^138186119444 is an apocalyptic number.

It is an amenable number.

138186119444 is a deficient number, since it is larger than the sum of its proper divisors (104841454996).

138186119444 is a wasteful number, since it uses less digits than its factorization.

138186119444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90827 (or 90825 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The spelling of 138186119444 in words is "one hundred thirty-eight billion, one hundred eighty-six million, one hundred nineteen thousand, four hundred forty-four".