133818133 has 2 divisors, whose sum is σ = 133818134. Its totient is φ = 133818132.

The previous prime is 133818131. The next prime is 133818143. The reversal of 133818133 is 331818331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130713489 + 3104644 = 11433^2 + 1762^2 .

It is a cyclic number.

It is not a de Polignac number, because 133818133 - 2¹ = 133818131 is a prime.

Together with 133818131, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 133818095 and 133818104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133818131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66909066 + 66909067.

It is an arithmetic number, because the mean of its divisors is an integer number (66909067).

Almost surely, 2^133818133 is an apocalyptic number.

It is an amenable number.

133818133 is a deficient number, since it is larger than the sum of its proper divisors (1).

133818133 is an equidigital number, since it uses as much as digits as its factorization.

133818133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 133818133 is about 11567.9787776431. The cubic root of 133818133 is about 511.4913835942.

The spelling of 133818133 in words is "one hundred thirty-three million, eight hundred eighteen thousand, one hundred thirty-three".