133693533 has 6 divisors (see below), whose sum is σ = 193112894. Its totient is φ = 89129016.

The previous prime is 133693531. The next prime is 133693537. The reversal of 133693533 is 335396331.

It is a happy number.

133693533 is a `hidden beast` number, since 1 + 3 + 36 + 93 + 533 = 666.

It can be written as a sum of positive squares in only one way, i.e., 133679844 + 13689 = 11562^2 + 117^2 .

It is not a de Polignac number, because 133693533 - 2¹ = 133693531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133693531) 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 5 ways as a sum of consecutive naturals, for example, 7427410 + ... + 7427427.

Almost surely, 2^133693533 is an apocalyptic number.

It is an amenable number.

133693533 is a deficient number, since it is larger than the sum of its proper divisors (59419361).

133693533 is a wasteful number, since it uses less digits than its factorization.

133693533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14854843 (or 14854840 counting only the distinct ones).

The product of its digits is 65610, while the sum is 36.

The square root of 133693533 is about 11562.5919672018. The cubic root of 133693533 is about 511.3325819536.

The spelling of 133693533 in words is "one hundred thirty-three million, six hundred ninety-three thousand, five hundred thirty-three".