1326463243 has 4 divisors (see below), whose sum is σ = 1515958000. Its totient is φ = 1136968488.

The previous prime is 1326463213. The next prime is 1326463279. The reversal of 1326463243 is 3423646231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423646231 = 31 ⋅110440201.

It is a cyclic number.

It is not a de Polignac number, because 1326463243 - 2²¹ = 1324366091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1326463199 and 1326463208.

It is not an unprimeable number, because it can be changed into a prime (1326463213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94747368 + ... + 94747381.

It is an arithmetic number, because the mean of its divisors is an integer number (378989500).

Almost surely, 2^1326463243 is an apocalyptic number.

1326463243 is a deficient number, since it is larger than the sum of its proper divisors (189494757).

1326463243 is an equidigital number, since it uses as much as digits as its factorization.

1326463243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189494756.

The product of its digits is 62208, while the sum is 34.

The square root of 1326463243 is about 36420.6430887759. The cubic root of 1326463243 is about 1098.7487819987.

The spelling of 1326463243 in words is "one billion, three hundred twenty-six million, four hundred sixty-three thousand, two hundred forty-three".