136453391 has 2 divisors, whose sum is σ = 136453392. Its totient is φ = 136453390.

The previous prime is 136453357. The next prime is 136453397. The reversal of 136453391 is 193354631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136453391 - 2⁶ = 136453327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136453397) 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, 68226695 + 68226696.

It is an arithmetic number, because the mean of its divisors is an integer number (68226696).

Almost surely, 2^136453391 is an apocalyptic number.

136453391 is a deficient number, since it is larger than the sum of its proper divisors (1).

136453391 is an equidigital number, since it uses as much as digits as its factorization.

136453391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 35.

The square root of 136453391 is about 11681.3265941844. The cubic root of 136453391 is about 514.8271528533.

The spelling of 136453391 in words is "one hundred thirty-six million, four hundred fifty-three thousand, three hundred ninety-one".