1326140813 has 2 divisors, whose sum is σ = 1326140814. Its totient is φ = 1326140812.

The previous prime is 1326140749. The next prime is 1326140833. The reversal of 1326140813 is 3180416231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 866595844 + 459544969 = 29438^2 + 21437^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326140813 - 2⁶ = 1326140749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326140833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663070406 + 663070407.

It is an arithmetic number, because the mean of its divisors is an integer number (663070407).

Almost surely, 2^1326140813 is an apocalyptic number.

It is an amenable number.

1326140813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326140813 is an equidigital number, since it uses as much as digits as its factorization.

1326140813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1326140813 is about 36416.2163465674. The cubic root of 1326140813 is about 1098.6597486789.

The spelling of 1326140813 in words is "one billion, three hundred twenty-six million, one hundred forty thousand, eight hundred thirteen".