137949358237 has 2 divisors, whose sum is σ = 137949358238. Its totient is φ = 137949358236.

The previous prime is 137949358133. The next prime is 137949358247. The reversal of 137949358237 is 732853949731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76878098361 + 61071259876 = 277269^2 + 247126^2 .

It is a cyclic number.

It is not a de Polignac number, because 137949358237 - 2²³ = 137940969629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137949358247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68974679118 + 68974679119.

It is an arithmetic number, because the mean of its divisors is an integer number (68974679119).

Almost surely, 2^137949358237 is an apocalyptic number.

It is an amenable number.

137949358237 is a deficient number, since it is larger than the sum of its proper divisors (1).

137949358237 is an equidigital number, since it uses as much as digits as its factorization.

137949358237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 61.

The spelling of 137949358237 in words is "one hundred thirty-seven billion, nine hundred forty-nine million, three hundred fifty-eight thousand, two hundred thirty-seven".