138717283 has 2 divisors, whose sum is σ = 138717284. Its totient is φ = 138717282.

The previous prime is 138717259. The next prime is 138717287. The reversal of 138717283 is 382717831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138717283 - 2¹³ = 138709091 is a prime.

It is equal to p_7843675 and since 138717283 and 7843675 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (138717287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69358641 + 69358642.

It is an arithmetic number, because the mean of its divisors is an integer number (69358642).

Almost surely, 2^138717283 is an apocalyptic number.

138717283 is a deficient number, since it is larger than the sum of its proper divisors (1).

138717283 is an equidigital number, since it uses as much as digits as its factorization.

138717283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 138717283 is about 11777.8301482064. The cubic root of 138717283 is about 517.6587086634.

The spelling of 138717283 in words is "one hundred thirty-eight million, seven hundred seventeen thousand, two hundred eighty-three".