1326430553 has 8 divisors (see below), whose sum is σ = 1534185408. Its totient is φ = 1123241904.

The previous prime is 1326430549. The next prime is 1326430561. The reversal of 1326430553 is 3550346231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1326430553 - 2² = 1326430549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1326430583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140926 + ... + 1142087.

It is an arithmetic number, because the mean of its divisors is an integer number (191773176).

Almost surely, 2^1326430553 is an apocalyptic number.

It is an amenable number.

1326430553 is a deficient number, since it is larger than the sum of its proper divisors (207754855).

1326430553 is an equidigital number, since it uses as much as digits as its factorization.

1326430553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283103.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 1326430553 is about 36420.1943020627. The cubic root of 1326430553 is about 1098.7397558929.

Adding to 1326430553 its reverse (3550346231), we get a palindrome (4876776784).

The spelling of 1326430553 in words is "one billion, three hundred twenty-six million, four hundred thirty thousand, five hundred fifty-three".