1326316555 has 16 divisors (see below), whose sum is σ = 1645286400. Its totient is φ = 1025347680.

The previous prime is 1326316531. The next prime is 1326316571. The reversal of 1326316555 is 5556136231.

It is a de Polignac number, because none of the positive numbers 2^k-1326316555 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108756 + ... + 120334.

It is an arithmetic number, because the mean of its divisors is an integer number (102830400).

Almost surely, 2^1326316555 is an apocalyptic number.

1326316555 is a deficient number, since it is larger than the sum of its proper divisors (318969845).

1326316555 is a wasteful number, since it uses less digits than its factorization.

1326316555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12354.

The product of its digits is 81000, while the sum is 37.

The square root of 1326316555 is about 36418.6292301069. The cubic root of 1326316555 is about 1098.7082785010.

The spelling of 1326316555 in words is "one billion, three hundred twenty-six million, three hundred sixteen thousand, five hundred fifty-five".