135041809 has 8 divisors (see below), whose sum is σ = 161043840. Its totient is φ = 110717376.

The previous prime is 135041807. The next prime is 135041831. The reversal of 135041809 is 908140531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135041809 - 2¹ = 135041807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135041807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419224 + ... + 419545.

It is an arithmetic number, because the mean of its divisors is an integer number (20130480).

Almost surely, 2^135041809 is an apocalyptic number.

It is an amenable number.

135041809 is a deficient number, since it is larger than the sum of its proper divisors (26002031).

135041809 is an equidigital number, since it uses as much as digits as its factorization.

135041809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838799.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 135041809 is about 11620.7490722414. The cubic root of 135041809 is about 513.0457358588.

The spelling of 135041809 in words is "one hundred thirty-five million, forty-one thousand, eight hundred nine".