1326473813 has 16 divisors (see below), whose sum is σ = 1543872000. Its totient is φ = 1116106992.

The previous prime is 1326473801. The next prime is 1326473821. The reversal of 1326473813 is 3183746231.

It is not a de Polignac number, because 1326473813 - 2⁸ = 1326473557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326473843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352898 + ... + 356636.

It is an arithmetic number, because the mean of its divisors is an integer number (96492000).

Almost surely, 2^1326473813 is an apocalyptic number.

It is an amenable number.

1326473813 is a deficient number, since it is larger than the sum of its proper divisors (217398187).

1326473813 is an equidigital number, since it uses as much as digits as its factorization.

1326473813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664.

The product of its digits is 72576, while the sum is 38.

The square root of 1326473813 is about 36420.7881985000. The cubic root of 1326473813 is about 1098.7517004723.

The spelling of 1326473813 in words is "one billion, three hundred twenty-six million, four hundred seventy-three thousand, eight hundred thirteen".