135415691 has 2 divisors, whose sum is σ = 135415692. Its totient is φ = 135415690.

The previous prime is 135415667. The next prime is 135415711. The reversal of 135415691 is 196514531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135415691 - 2¹⁰ = 135414667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (135411691) 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, 67707845 + 67707846.

It is an arithmetic number, because the mean of its divisors is an integer number (67707846).

Almost surely, 2^135415691 is an apocalyptic number.

135415691 is a deficient number, since it is larger than the sum of its proper divisors (1).

135415691 is an equidigital number, since it uses as much as digits as its factorization.

135415691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 135415691 is about 11636.8247817005. The cubic root of 135415691 is about 513.5187790187.

The spelling of 135415691 in words is "one hundred thirty-five million, four hundred fifteen thousand, six hundred ninety-one".