1329262813 has 2 divisors, whose sum is σ = 1329262814. Its totient is φ = 1329262812.

The previous prime is 1329262799. The next prime is 1329262817. The reversal of 1329262813 is 3182629231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 751966084 + 577296729 = 27422^2 + 24027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329262813 - 2⁹ = 1329262301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1329262817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664631406 + 664631407.

It is an arithmetic number, because the mean of its divisors is an integer number (664631407).

Almost surely, 2^1329262813 is an apocalyptic number.

It is an amenable number.

1329262813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329262813 is an equidigital number, since it uses as much as digits as its factorization.

1329262813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 1329262813 is about 36459.0566663483. The cubic root of 1329262813 is about 1099.5212277339.

The spelling of 1329262813 in words is "one billion, three hundred twenty-nine million, two hundred sixty-two thousand, eight hundred thirteen".