136956269 has 2 divisors, whose sum is σ = 136956270. Its totient is φ = 136956268.

The previous prime is 136956263. The next prime is 136956289. The reversal of 136956269 is 962659631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135606025 + 1350244 = 11645^2 + 1162^2 .

It is an emirp because it is prime and its reverse (962659631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136956269 - 2⁸ = 136956013 is a prime.

It is a super-2 number, since 2×136956269² = 37514039236800722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136956263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68478134 + 68478135.

It is an arithmetic number, because the mean of its divisors is an integer number (68478135).

Almost surely, 2^136956269 is an apocalyptic number.

It is an amenable number.

136956269 is a deficient number, since it is larger than the sum of its proper divisors (1).

136956269 is an equidigital number, since it uses as much as digits as its factorization.

136956269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 47.

The square root of 136956269 is about 11702.8316658833. The cubic root of 136956269 is about 515.4588163028.

It can be divided in two parts, 1369562 and 69, that added together give a palindrome (1369631).

The spelling of 136956269 in words is "one hundred thirty-six million, nine hundred fifty-six thousand, two hundred sixty-nine".