138748567 has 2 divisors, whose sum is σ = 138748568. Its totient is φ = 138748566.

The previous prime is 138748523. The next prime is 138748601. The reversal of 138748567 is 765847831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138748567 - 2¹⁵ = 138715799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138748567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138748867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69374283 + 69374284.

It is an arithmetic number, because the mean of its divisors is an integer number (69374284).

Almost surely, 2^138748567 is an apocalyptic number.

138748567 is a deficient number, since it is larger than the sum of its proper divisors (1).

138748567 is an equidigital number, since it uses as much as digits as its factorization.

138748567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 49.

The square root of 138748567 is about 11779.1581617703. The cubic root of 138748567 is about 517.6976204640.

The spelling of 138748567 in words is "one hundred thirty-eight million, seven hundred forty-eight thousand, five hundred sixty-seven".