139282718437 has 2 divisors, whose sum is σ = 139282718438. Its totient is φ = 139282718436.

The previous prime is 139282718401. The next prime is 139282718473. The reversal of 139282718437 is 734817282931.

It is a Cunningham number, because it is equal to 373206²+1.

Together with next prime (139282718473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (139282718401) and next prime (139282718473).

It can be written as a sum of positive squares in only one way, i.e., 139282718436 + 1 = 373206^2 + 1^2 .

It is an emirp because it is prime and its reverse (734817282931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139282718437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139282718137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69641359218 + 69641359219.

It is an arithmetic number, because the mean of its divisors is an integer number (69641359219).

Almost surely, 2^139282718437 is an apocalyptic number.

It is an amenable number.

139282718437 is a deficient number, since it is larger than the sum of its proper divisors (1).

139282718437 is an equidigital number, since it uses as much as digits as its factorization.

139282718437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 55.

The spelling of 139282718437 in words is "one hundred thirty-nine billion, two hundred eighty-two million, seven hundred eighteen thousand, four hundred thirty-seven".