1326417161 has 2 divisors, whose sum is σ = 1326417162. Its totient is φ = 1326417160.

The previous prime is 1326417137. The next prime is 1326417193. The reversal of 1326417161 is 1617146231.

It is an a-pointer prime, because the next prime (1326417193) can be obtained adding 1326417161 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1289887225 + 36529936 = 35915^2 + 6044^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326417161 - 2¹⁰ = 1326416137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1326417121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663208580 + 663208581.

It is an arithmetic number, because the mean of its divisors is an integer number (663208581).

Almost surely, 2^1326417161 is an apocalyptic number.

It is an amenable number.

1326417161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326417161 is an equidigital number, since it uses as much as digits as its factorization.

1326417161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 1326417161 is about 36420.0104475548. The cubic root of 1326417161 is about 1098.7360581564.

The spelling of 1326417161 in words is "one billion, three hundred twenty-six million, four hundred seventeen thousand, one hundred sixty-one".