135807845 has 8 divisors (see below), whose sum is σ = 163136376. Its totient is φ = 108534976.

The previous prime is 135807827. The next prime is 135807853. The reversal of 135807845 is 548708531.

It can be written as a sum of positive squares in 4 ways, for example, as 829921 + 134977924 = 911^2 + 11618^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135807845 - 2⁸ = 135807589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8342 + ... + 18471.

It is an arithmetic number, because the mean of its divisors is an integer number (20392047).

Almost surely, 2^135807845 is an apocalyptic number.

It is an amenable number.

135807845 is a deficient number, since it is larger than the sum of its proper divisors (27328531).

135807845 is a wasteful number, since it uses less digits than its factorization.

135807845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27831.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 135807845 is about 11653.6622998953. The cubic root of 135807845 is about 514.0140056341.

The spelling of 135807845 in words is "one hundred thirty-five million, eight hundred seven thousand, eight hundred forty-five".