1327638409 has 8 divisors (see below), whose sum is σ = 1406764800. Its totient is φ = 1248626496.

The previous prime is 1327638397. The next prime is 1327638413. The reversal of 1327638409 is 9048367231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1327638409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1327638479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129 + ... + 51694.

It is an arithmetic number, because the mean of its divisors is an integer number (175845600).

Almost surely, 2^1327638409 is an apocalyptic number.

It is an amenable number.

1327638409 is a deficient number, since it is larger than the sum of its proper divisors (79126391).

1327638409 is a wasteful number, since it uses less digits than its factorization.

1327638409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57239.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 1327638409 is about 36436.7727577512. The cubic root of 1327638409 is about 1099.0731611560.

The spelling of 1327638409 in words is "one billion, three hundred twenty-seven million, six hundred thirty-eight thousand, four hundred nine".