138282068437 has 4 divisors (see below), whose sum is σ = 142019421676. Its totient is φ = 134544715200.

The previous prime is 138282068413. The next prime is 138282068459. The reversal of 138282068437 is 734860282831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 734860282831 = 2621 ⋅280374011.

It can be written as a sum of positive squares in 2 ways, for example, as 79502005521 + 58780062916 = 281961^2 + 242446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138282068437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138282068467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868676564 + ... + 1868676637.

It is an arithmetic number, because the mean of its divisors is an integer number (35504855419).

Almost surely, 2^138282068437 is an apocalyptic number.

It is an amenable number.

138282068437 is a deficient number, since it is larger than the sum of its proper divisors (3737353239).

138282068437 is an equidigital number, since it uses as much as digits as its factorization.

138282068437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737353238.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 138282068437 in words is "one hundred thirty-eight billion, two hundred eighty-two million, sixty-eight thousand, four hundred thirty-seven".