135438633 has 24 divisors (see below), whose sum is σ = 213878496. Its totient is φ = 81907200.

The previous prime is 135438629. The next prime is 135438637. The reversal of 135438633 is 336834531.

135438633 is a `hidden beast` number, since 1 + 3 + 543 + 86 + 33 = 666.

It is an interprime number because it is at equal distance from previous prime (135438629) and next prime (135438637).

It is not a de Polignac number, because 135438633 - 2² = 135438629 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135438637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55938 + ... + 58308.

It is an arithmetic number, because the mean of its divisors is an integer number (8911604).

Almost surely, 2^135438633 is an apocalyptic number.

It is an amenable number.

135438633 is a deficient number, since it is larger than the sum of its proper divisors (78439863).

135438633 is a wasteful number, since it uses less digits than its factorization.

135438633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965 (or 2962 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 135438633 is about 11637.8104899504. The cubic root of 135438633 is about 513.5477773386.

The spelling of 135438633 in words is "one hundred thirty-five million, four hundred thirty-eight thousand, six hundred thirty-three".