135901806 has 8 divisors (see below), whose sum is σ = 271803624. Its totient is φ = 45300600.

The previous prime is 135901789. The next prime is 135901807. The reversal of 135901806 is 608109531.

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

135901806 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135901807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11325145 + ... + 11325156.

It is an arithmetic number, because the mean of its divisors is an integer number (33975453).

Almost surely, 2^135901806 is an apocalyptic number.

135901806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135901806 is a wasteful number, since it uses less digits than its factorization.

135901806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22650306.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 135901806 is about 11657.6929964723. The cubic root of 135901806 is about 514.1325214578.

The spelling of 135901806 in words is "one hundred thirty-five million, nine hundred one thousand, eight hundred six".