138301529 has 2 divisors, whose sum is σ = 138301530. Its totient is φ = 138301528.

The previous prime is 138301483. The next prime is 138301543. The reversal of 138301529 is 925103831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96569929 + 41731600 = 9827^2 + 6460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138301529 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 138301495 and 138301504.

It is not a weakly prime, because it can be changed into another prime (138301549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69150764 + 69150765.

It is an arithmetic number, because the mean of its divisors is an integer number (69150765).

Almost surely, 2^138301529 is an apocalyptic number.

It is an amenable number.

138301529 is a deficient number, since it is larger than the sum of its proper divisors (1).

138301529 is an equidigital number, since it uses as much as digits as its factorization.

138301529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 138301529 is about 11760.1670481333. The cubic root of 138301529 is about 517.1410273148.

The spelling of 138301529 in words is "one hundred thirty-eight million, three hundred one thousand, five hundred twenty-nine".