1317328538 has 32 divisors (see below), whose sum is σ = 2222931600. Its totient is φ = 582349824.

The previous prime is 1317328531. The next prime is 1317328543. The reversal of 1317328538 is 8358237131.

It can be written as a sum of positive squares in 8 ways, for example, as 1316746369 + 582169 = 36287^2 + 763^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1317328495 and 1317328504.

It is not an unprimeable number, because it can be changed into a prime (1317328531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18428 + ... + 54536.

Almost surely, 2^1317328538 is an apocalyptic number.

1317328538 is a deficient number, since it is larger than the sum of its proper divisors (905603062).

1317328538 is a wasteful number, since it uses less digits than its factorization.

1317328538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36194.

The product of its digits is 120960, while the sum is 41.

The square root of 1317328538 is about 36295.0208430854. The cubic root of 1317328538 is about 1096.2207878539.

The spelling of 1317328538 in words is "one billion, three hundred seventeen million, three hundred twenty-eight thousand, five hundred thirty-eight".