138761393318 has 8 divisors (see below), whose sum is σ = 214856351040. Its totient is φ = 67142609640.

The previous prime is 138761393297. The next prime is 138761393339. The reversal of 138761393318 is 813393167831.

It is an interprime number because it is at equal distance from previous prime (138761393297) and next prime (138761393339).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 138761393318.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1119043433 + ... + 1119043556.

It is an arithmetic number, because the mean of its divisors is an integer number (26857043880).

Almost surely, 2^138761393318 is an apocalyptic number.

138761393318 is a deficient number, since it is larger than the sum of its proper divisors (76094957722).

138761393318 is a wasteful number, since it uses less digits than its factorization.

138761393318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238087022.

The product of its digits is 1959552, while the sum is 53.

The spelling of 138761393318 in words is "one hundred thirty-eight billion, seven hundred sixty-one million, three hundred ninety-three thousand, three hundred eighteen".