135891836 has 12 divisors (see below), whose sum is σ = 241068912. Its totient is φ = 67015008.

The previous prime is 135891827. The next prime is 135891839. The reversal of 135891836 is 638198531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135891839) 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, 232400 + ... + 232983.

It is an arithmetic number, because the mean of its divisors is an integer number (20089076).

Almost surely, 2^135891836 is an apocalyptic number.

It is an amenable number.

135891836 is a deficient number, since it is larger than the sum of its proper divisors (105177076).

135891836 is a wasteful number, since it uses less digits than its factorization.

135891836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465460 (or 465458 counting only the distinct ones).

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

The square root of 135891836 is about 11657.2653740060. The cubic root of 135891836 is about 514.1199485893.

The spelling of 135891836 in words is "one hundred thirty-five million, eight hundred ninety-one thousand, eight hundred thirty-six".