1326220653 has 16 divisors (see below), whose sum is σ = 1862438400. Its totient is φ = 837128880.

The previous prime is 1326220639. The next prime is 1326220657. The reversal of 1326220653 is 3560226231.

It is not a de Polignac number, because 1326220653 - 2⁶ = 1326220589 is a prime.

It is a super-2 number, since 2×1326220653² = 3517722440887492818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1326220653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326220657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110518 + ... + 121928.

It is an arithmetic number, because the mean of its divisors is an integer number (116402400).

Almost surely, 2^1326220653 is an apocalyptic number.

It is an amenable number.

1326220653 is a deficient number, since it is larger than the sum of its proper divisors (536217747).

1326220653 is a wasteful number, since it uses less digits than its factorization.

1326220653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1326220653 is about 36417.3125449971. The cubic root of 1326220653 is about 1098.6817964216.

Adding to 1326220653 its reverse (3560226231), we get a palindrome (4886446884).

The spelling of 1326220653 in words is "one billion, three hundred twenty-six million, two hundred twenty thousand, six hundred fifty-three".