133506019 has 2 divisors, whose sum is σ = 133506020. Its totient is φ = 133506018.

The previous prime is 133506001. The next prime is 133506041. The reversal of 133506019 is 910605331.

It is a weak prime.

It is an emirp because it is prime and its reverse (910605331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133506019 - 2⁵ = 133505987 is a prime.

It is a super-2 number, since 2×133506019² = 35647714218456722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133506059) 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 as a sum of consecutive naturals, namely, 66753009 + 66753010.

It is an arithmetic number, because the mean of its divisors is an integer number (66753010).

Almost surely, 2^133506019 is an apocalyptic number.

133506019 is a deficient number, since it is larger than the sum of its proper divisors (1).

133506019 is an equidigital number, since it uses as much as digits as its factorization.

133506019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 133506019 is about 11554.4804729594. The cubic root of 133506019 is about 511.0934108745.

The spelling of 133506019 in words is "one hundred thirty-three million, five hundred six thousand, nineteen".