137763917 has 2 divisors, whose sum is σ = 137763918. Its totient is φ = 137763916.

The previous prime is 137763887. The next prime is 137763929. The reversal of 137763917 is 719367731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137217796 + 546121 = 11714^2 + 739^2 .

It is an emirp because it is prime and its reverse (719367731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137763917 - 2⁶ = 137763853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137763517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68881958 + 68881959.

It is an arithmetic number, because the mean of its divisors is an integer number (68881959).

Almost surely, 2^137763917 is an apocalyptic number.

It is an amenable number.

137763917 is a deficient number, since it is larger than the sum of its proper divisors (1).

137763917 is an equidigital number, since it uses as much as digits as its factorization.

137763917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 166698, while the sum is 44.

The square root of 137763917 is about 11737.2874634645. The cubic root of 137763917 is about 516.4700724584.

The spelling of 137763917 in words is "one hundred thirty-seven million, seven hundred sixty-three thousand, nine hundred seventeen".