1325183609 has 4 divisors (see below), whose sum is σ = 1403135604. Its totient is φ = 1247231616.

The previous prime is 1325183603. The next prime is 1325183621. The reversal of 1325183609 is 9063815231.

It is a happy number.

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 816816400 + 508367209 = 28580^2 + 22547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325183609 - 2⁴ = 1325183593 is a prime.

It is a super-3 number, since 3×1325183609³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1325183603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38975972 + ... + 38976005.

It is an arithmetic number, because the mean of its divisors is an integer number (350783901).

Almost surely, 2^1325183609 is an apocalyptic number.

It is an amenable number.

1325183609 is a deficient number, since it is larger than the sum of its proper divisors (77951995).

1325183609 is an equidigital number, since it uses as much as digits as its factorization.

1325183609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77951994.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1325183609 is about 36403.0714226149. The cubic root of 1325183609 is about 1098.3953487447.

The spelling of 1325183609 in words is "one billion, three hundred twenty-five million, one hundred eighty-three thousand, six hundred nine".