1326343653 has 10 divisors (see below), whose sum is σ = 1981328294. Its totient is φ = 884229048.

The previous prime is 1326343651. The next prime is 1326343657. The reversal of 1326343653 is 3563436231.

1326343653 is a `hidden beast` number, since 13 + 2 + 634 + 3 + 6 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1320740964 + 5602689 = 36342^2 + 2367^2 .

It is not a de Polignac number, because 1326343653 - 2¹ = 1326343651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326343651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8187226 + ... + 8187387.

Almost surely, 2^1326343653 is an apocalyptic number.

It is an amenable number.

1326343653 is a deficient number, since it is larger than the sum of its proper divisors (654984641).

1326343653 is an equidigital number, since it uses as much as digits as its factorization.

1326343653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16374625 (or 16374616 counting only the distinct ones).

The product of its digits is 116640, while the sum is 36.

The square root of 1326343653 is about 36419.0012630769. The cubic root of 1326343653 is about 1098.7157610270.

Adding to 1326343653 its reverse (3563436231), we get a palindrome (4889779884).

The spelling of 1326343653 in words is "one billion, three hundred twenty-six million, three hundred forty-three thousand, six hundred fifty-three".