1326410081 has 2 divisors, whose sum is σ = 1326410082. Its totient is φ = 1326410080.

The previous prime is 1326409999. The next prime is 1326410119. The reversal of 1326410081 is 1800146231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1091707681 + 234702400 = 33041^2 + 15320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326410081 - 2¹⁴ = 1326393697 is a prime.

It is a super-2 number, since 2×1326410081² = 3518727405956853122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1326410081.

It is not a weakly prime, because it can be changed into another prime (1326410581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663205040 + 663205041.

It is an arithmetic number, because the mean of its divisors is an integer number (663205041).

Almost surely, 2^1326410081 is an apocalyptic number.

It is an amenable number.

1326410081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326410081 is an equidigital number, since it uses as much as digits as its factorization.

1326410081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1326410081 is about 36419.9132481119. The cubic root of 1326410081 is about 1098.7341032497.

The spelling of 1326410081 in words is "one billion, three hundred twenty-six million, four hundred ten thousand, eighty-one".