135181636 has 6 divisors (see below), whose sum is σ = 236567870. Its totient is φ = 67590816.

The previous prime is 135181589. The next prime is 135181661. The reversal of 135181636 is 636181531.

It can be written as a sum of positive squares in only one way, i.e., 116640000 + 18541636 = 10800^2 + 4306^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16897701 + ... + 16897708.

Almost surely, 2^135181636 is an apocalyptic number.

It is an amenable number.

135181636 is a deficient number, since it is larger than the sum of its proper divisors (101386234).

135181636 is a wasteful number, since it uses less digits than its factorization.

135181636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33795413 (or 33795411 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 135181636 is about 11626.7637801755. The cubic root of 135181636 is about 513.2227499282. Note that the first 3 decimals are identical.

The spelling of 135181636 in words is "one hundred thirty-five million, one hundred eighty-one thousand, six hundred thirty-six".