133958133 has 6 divisors (see below), whose sum is σ = 193495094. Its totient is φ = 89305416.

The previous prime is 133958117. The next prime is 133958137. The reversal of 133958133 is 331859331.

It is a happy number.

133958133 is a `hidden beast` number, since 13 + 39 + 581 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 69605649 + 64352484 = 8343^2 + 8022^2 .

It is not a de Polignac number, because 133958133 - 2⁴ = 133958117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133958137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7442110 + ... + 7442127.

Almost surely, 2^133958133 is an apocalyptic number.

It is an amenable number.

133958133 is a deficient number, since it is larger than the sum of its proper divisors (59536961).

133958133 is a wasteful number, since it uses less digits than its factorization.

133958133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14884243 (or 14884240 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 133958133 is about 11574.0283825468. The cubic root of 133958133 is about 511.6696948447.

It can be divided in two parts, 13395 and 8133, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 133958133 in words is "one hundred thirty-three million, nine hundred fifty-eight thousand, one hundred thirty-three".