137318789 has 2 divisors, whose sum is σ = 137318790. Its totient is φ = 137318788.

The previous prime is 137318759. The next prime is 137318801. The reversal of 137318789 is 987813731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105226564 + 32092225 = 10258^2 + 5665^2 .

It is an emirp because it is prime and its reverse (987813731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137318789 - 2¹² = 137314693 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137318759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68659394 + 68659395.

It is an arithmetic number, because the mean of its divisors is an integer number (68659395).

Almost surely, 2^137318789 is an apocalyptic number.

It is an amenable number.

137318789 is a deficient number, since it is larger than the sum of its proper divisors (1).

137318789 is an equidigital number, since it uses as much as digits as its factorization.

137318789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 47.

The square root of 137318789 is about 11718.3099890727. The cubic root of 137318789 is about 515.9132180339.

The spelling of 137318789 in words is "one hundred thirty-seven million, three hundred eighteen thousand, seven hundred eighty-nine".