137758793 has 2 divisors, whose sum is σ = 137758794. Its totient is φ = 137758792.

The previous prime is 137758783. The next prime is 137758813. The reversal of 137758793 is 397857731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118635664 + 19123129 = 10892^2 + 4373^2 .

It is an emirp because it is prime and its reverse (397857731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137758793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137758703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68879396 + 68879397.

It is an arithmetic number, because the mean of its divisors is an integer number (68879397).

Almost surely, 2^137758793 is an apocalyptic number.

It is an amenable number.

137758793 is a deficient number, since it is larger than the sum of its proper divisors (1).

137758793 is an equidigital number, since it uses as much as digits as its factorization.

137758793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111320, while the sum is 50.

The square root of 137758793 is about 11737.0691827219. The cubic root of 137758793 is about 516.4636691720.

The spelling of 137758793 in words is "one hundred thirty-seven million, seven hundred fifty-eight thousand, seven hundred ninety-three".