133136669 has 2 divisors, whose sum is σ = 133136670. Its totient is φ = 133136668.

The previous prime is 133136659. The next prime is 133136677. The reversal of 133136669 is 966631331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103836100 + 29300569 = 10190^2 + 5413^2 .

It is a cyclic number.

It is not a de Polignac number, because 133136669 - 2²⁰ = 132088093 is a prime.

It is a super-2 number, since 2×133136669² = 35450745264831122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133136659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66568334 + 66568335.

It is an arithmetic number, because the mean of its divisors is an integer number (66568335).

Almost surely, 2^133136669 is an apocalyptic number.

It is an amenable number.

133136669 is a deficient number, since it is larger than the sum of its proper divisors (1).

133136669 is an equidigital number, since it uses as much as digits as its factorization.

133136669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 38.

The square root of 133136669 is about 11538.4864258706. The cubic root of 133136669 is about 510.6216551115.

The spelling of 133136669 in words is "one hundred thirty-three million, one hundred thirty-six thousand, six hundred sixty-nine".