135819329 has 2 divisors, whose sum is σ = 135819330. Its totient is φ = 135819328.

The previous prime is 135819289. The next prime is 135819349. The reversal of 135819329 is 923918531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78287104 + 57532225 = 8848^2 + 7585^2 .

It is an emirp because it is prime and its reverse (923918531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135819329 - 2²⁴ = 119042113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (135819349) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67909664 + 67909665.

It is an arithmetic number, because the mean of its divisors is an integer number (67909665).

Almost surely, 2^135819329 is an apocalyptic number.

It is an amenable number.

135819329 is a deficient number, since it is larger than the sum of its proper divisors (1).

135819329 is an equidigital number, since it uses as much as digits as its factorization.

135819329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 135819329 is about 11654.1550101241. The cubic root of 135819329 is about 514.0284936790.

The spelling of 135819329 in words is "one hundred thirty-five million, eight hundred nineteen thousand, three hundred twenty-nine".