1326132657 has 12 divisors (see below), whose sum is σ = 1917781684. Its totient is φ = 883046880.

The previous prime is 1326132653. The next prime is 1326132671. The reversal of 1326132657 is 7562316231.

1326132657 is a `hidden beast` number, since 1 + 32 + 613 + 2 + 6 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 96648561 + 1229484096 = 9831^2 + 35064^2 .

It is not a de Polignac number, because 1326132657 - 2² = 1326132653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326132653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78694 + ... + 94047.

Almost surely, 2^1326132657 is an apocalyptic number.

It is an amenable number.

1326132657 is a deficient number, since it is larger than the sum of its proper divisors (591649027).

1326132657 is a wasteful number, since it uses less digits than its factorization.

1326132657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173600 (or 173597 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 1326132657 is about 36416.1043633171. The cubic root of 1326132657 is about 1098.6574963572.

Adding to 1326132657 its reverse (7562316231), we get a palindrome (8888448888).

The spelling of 1326132657 in words is "one billion, three hundred twenty-six million, one hundred thirty-two thousand, six hundred fifty-seven".