138866444182 has 4 divisors (see below), whose sum is σ = 208299666276. Its totient is φ = 69433222090.

The previous prime is 138866444173. The next prime is 138866444191. The reversal of 138866444182 is 281444668831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 281444668831 = 147937 ⋅1902463.

It is an interprime number because it is at equal distance from previous prime (138866444173) and next prime (138866444191).

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 as a sum of consecutive naturals, namely, 34716611044 + ... + 34716611047.

It is an arithmetic number, because the mean of its divisors is an integer number (52074916569).

Almost surely, 2^138866444182 is an apocalyptic number.

138866444182 is a deficient number, since it is larger than the sum of its proper divisors (69433222094).

138866444182 is an equidigital number, since it uses as much as digits as its factorization.

138866444182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69433222093.

The product of its digits is 7077888, while the sum is 55.

The spelling of 138866444182 in words is "one hundred thirty-eight billion, eight hundred sixty-six million, four hundred forty-four thousand, one hundred eighty-two".