133580369 has 4 divisors (see below), whose sum is σ = 143855796. Its totient is φ = 123304944.

The previous prime is 133580347. The next prime is 133580383. The reversal of 133580369 is 963085331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62599744 + 70980625 = 7912^2 + 8425^2 .

It is a cyclic number.

It is not a de Polignac number, because 133580369 - 2²⁰ = 132531793 is a prime.

It is a super-2 number, since 2×133580369² = 35687429964352322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133580309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5137694 + ... + 5137719.

It is an arithmetic number, because the mean of its divisors is an integer number (35963949).

Almost surely, 2^133580369 is an apocalyptic number.

It is an amenable number.

133580369 is a deficient number, since it is larger than the sum of its proper divisors (10275427).

133580369 is a wasteful number, since it uses less digits than its factorization.

133580369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10275426.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 133580369 is about 11557.6973917818. The cubic root of 133580369 is about 511.1882698766.

The spelling of 133580369 in words is "one hundred thirty-three million, five hundred eighty thousand, three hundred sixty-nine".