138048529 has 2 divisors, whose sum is σ = 138048530. Its totient is φ = 138048528.

The previous prime is 138048527. The next prime is 138048577. The reversal of 138048529 is 925840831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112848129 + 25200400 = 10623^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 138048529 - 2¹ = 138048527 is a prime.

Together with 138048527, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 138048491 and 138048500.

It is not a weakly prime, because it can be changed into another prime (138048527) 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, 69024264 + 69024265.

It is an arithmetic number, because the mean of its divisors is an integer number (69024265).

Almost surely, 2^138048529 is an apocalyptic number.

It is an amenable number.

138048529 is a deficient number, since it is larger than the sum of its proper divisors (1).

138048529 is an equidigital number, since it uses as much as digits as its factorization.

138048529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 138048529 is about 11749.4054743208. The cubic root of 138048529 is about 516.8254932218.

The spelling of 138048529 in words is "one hundred thirty-eight million, forty-eight thousand, five hundred twenty-nine".