135201689 has 4 divisors (see below), whose sum is σ = 154516224. Its totient is φ = 115887156.

The previous prime is 135201673. The next prime is 135201707. The reversal of 135201689 is 986102531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986102531 = 43 ⋅22932617.

It is not a de Polignac number, because 135201689 - 2⁴ = 135201673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135209689) 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 3 ways as a sum of consecutive naturals, for example, 9657257 + ... + 9657270.

It is an arithmetic number, because the mean of its divisors is an integer number (38629056).

Almost surely, 2^135201689 is an apocalyptic number.

It is an amenable number.

135201689 is a deficient number, since it is larger than the sum of its proper divisors (19314535).

135201689 is an equidigital number, since it uses as much as digits as its factorization.

135201689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19314534.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 135201689 is about 11627.6261119800. The cubic root of 135201689 is about 513.2481260253.

The spelling of 135201689 in words is "one hundred thirty-five million, two hundred one thousand, six hundred eighty-nine".