1330133257 has 2 divisors, whose sum is σ = 1330133258. Its totient is φ = 1330133256.

The previous prime is 1330133237. The next prime is 1330133297. The reversal of 1330133257 is 7523310331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858548601 + 471584656 = 29301^2 + 21716^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330133257 - 2²⁷ = 1195915529 is a prime.

It is not a weakly prime, because it can be changed into another prime (1330133237) 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 as a sum of consecutive naturals, namely, 665066628 + 665066629.

It is an arithmetic number, because the mean of its divisors is an integer number (665066629).

Almost surely, 2^1330133257 is an apocalyptic number.

It is an amenable number.

1330133257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330133257 is an equidigital number, since it uses as much as digits as its factorization.

1330133257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 1330133257 is about 36470.9919936379. The cubic root of 1330133257 is about 1099.7611759757.

Adding to 1330133257 its reverse (7523310331), we get a palindrome (8853443588).

The spelling of 1330133257 in words is "one billion, three hundred thirty million, one hundred thirty-three thousand, two hundred fifty-seven".