136394263 has 2 divisors, whose sum is σ = 136394264. Its totient is φ = 136394262.

The previous prime is 136394257. The next prime is 136394287. The reversal of 136394263 is 362493631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136394263 - 2¹⁷ = 136263191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136394233) 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, 68197131 + 68197132.

It is an arithmetic number, because the mean of its divisors is an integer number (68197132).

Almost surely, 2^136394263 is an apocalyptic number.

136394263 is a deficient number, since it is larger than the sum of its proper divisors (1).

136394263 is an equidigital number, since it uses as much as digits as its factorization.

136394263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 37.

The square root of 136394263 is about 11678.7954430241. The cubic root of 136394263 is about 514.7527804550.

The spelling of 136394263 in words is "one hundred thirty-six million, three hundred ninety-four thousand, two hundred sixty-three".