136345289 has 2 divisors, whose sum is σ = 136345290. Its totient is φ = 136345288.

The previous prime is 136345267. The next prime is 136345291. The reversal of 136345289 is 982543631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134676025 + 1669264 = 11605^2 + 1292^2 .

It is a cyclic number.

It is not a de Polignac number, because 136345289 - 2²⁰ = 135296713 is a prime.

Together with 136345291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136345229) 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, 68172644 + 68172645.

It is an arithmetic number, because the mean of its divisors is an integer number (68172645).

Almost surely, 2^136345289 is an apocalyptic number.

It is an amenable number.

136345289 is a deficient number, since it is larger than the sum of its proper divisors (1).

136345289 is an equidigital number, since it uses as much as digits as its factorization.

136345289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 136345289 is about 11676.6985488194. The cubic root of 136345289 is about 514.6911636881.

The spelling of 136345289 in words is "one hundred thirty-six million, three hundred forty-five thousand, two hundred eighty-nine".