1328176813 has 2 divisors, whose sum is σ = 1328176814. Its totient is φ = 1328176812.

The previous prime is 1328176783. The next prime is 1328176859. The reversal of 1328176813 is 3186718231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1301982889 + 26193924 = 36083^2 + 5118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328176813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328177813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664088406 + 664088407.

It is an arithmetic number, because the mean of its divisors is an integer number (664088407).

Almost surely, 2^1328176813 is an apocalyptic number.

It is an amenable number.

1328176813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328176813 is an equidigital number, since it uses as much as digits as its factorization.

1328176813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 1328176813 is about 36444.1602043455. The cubic root of 1328176813 is about 1099.2217119987.

The spelling of 1328176813 in words is "one billion, three hundred twenty-eight million, one hundred seventy-six thousand, eight hundred thirteen".