1326416243 has 2 divisors, whose sum is σ = 1326416244. Its totient is φ = 1326416242.

The previous prime is 1326416237. The next prime is 1326416309. The reversal of 1326416243 is 3426146231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3426146231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1326416243 - 2¹⁰ = 1326415219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326410243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663208121 + 663208122.

It is an arithmetic number, because the mean of its divisors is an integer number (663208122).

Almost surely, 2^1326416243 is an apocalyptic number.

1326416243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326416243 is an equidigital number, since it uses as much as digits as its factorization.

1326416243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 1326416243 is about 36419.9978445908. The cubic root of 1326416243 is about 1098.7358046816.

The spelling of 1326416243 in words is "one billion, three hundred twenty-six million, four hundred sixteen thousand, two hundred forty-three".