136380529 has 2 divisors, whose sum is σ = 136380530. Its totient is φ = 136380528.

The previous prime is 136380527. The next prime is 136380553. The reversal of 136380529 is 925083631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113912929 + 22467600 = 10673^2 + 4740^2 .

It is an emirp because it is prime and its reverse (925083631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136380529 - 2¹ = 136380527 is a prime.

Together with 136380527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (136380527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68190264 + 68190265.

It is an arithmetic number, because the mean of its divisors is an integer number (68190265).

Almost surely, 2^136380529 is an apocalyptic number.

It is an amenable number.

136380529 is a deficient number, since it is larger than the sum of its proper divisors (1).

136380529 is an equidigital number, since it uses as much as digits as its factorization.

136380529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 136380529 is about 11678.2074395003. The cubic root of 136380529 is about 514.7355024752.

The spelling of 136380529 in words is "one hundred thirty-six million, three hundred eighty thousand, five hundred twenty-nine".