135813689 has 16 divisors (see below), whose sum is σ = 158385024. Its totient is φ = 115209600.

The previous prime is 135813679. The next prime is 135813701. The reversal of 135813689 is 986318531.

It is not a de Polignac number, because 135813689 - 2¹² = 135809593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135813619) 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 in 15 ways as a sum of consecutive naturals, for example, 3827 + ... + 16919.

It is an arithmetic number, because the mean of its divisors is an integer number (9899064).

Almost surely, 2^135813689 is an apocalyptic number.

It is an amenable number.

135813689 is a deficient number, since it is larger than the sum of its proper divisors (22571335).

135813689 is a wasteful number, since it uses less digits than its factorization.

135813689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13168.

The product of its digits is 155520, while the sum is 44.

The square root of 135813689 is about 11653.9130338269. The cubic root of 135813689 is about 514.0213784403.

The spelling of 135813689 in words is "one hundred thirty-five million, eight hundred thirteen thousand, six hundred eighty-nine".