138337357 has 2 divisors, whose sum is σ = 138337358. Its totient is φ = 138337356.

The previous prime is 138337333. The next prime is 138337361. The reversal of 138337357 is 753733831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73599241 + 64738116 = 8579^2 + 8046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138337357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138337307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69168678 + 69168679.

It is an arithmetic number, because the mean of its divisors is an integer number (69168679).

Almost surely, 2^138337357 is an apocalyptic number.

It is an amenable number.

138337357 is a deficient number, since it is larger than the sum of its proper divisors (1).

138337357 is an equidigital number, since it uses as much as digits as its factorization.

138337357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 40.

The square root of 138337357 is about 11761.6902271740. The cubic root of 138337357 is about 517.1856798194.

The spelling of 138337357 in words is "one hundred thirty-eight million, three hundred thirty-seven thousand, three hundred fifty-seven".