1305664333 has 2 divisors, whose sum is σ = 1305664334. Its totient is φ = 1305664332.

The previous prime is 1305664307. The next prime is 1305664357. The reversal of 1305664333 is 3334665031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1150362889 + 155301444 = 33917^2 + 12462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305664333 - 2⁵ = 1305664301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305664133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652832166 + 652832167.

It is an arithmetic number, because the mean of its divisors is an integer number (652832167).

Almost surely, 2^1305664333 is an apocalyptic number.

It is an amenable number.

1305664333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305664333 is an equidigital number, since it uses as much as digits as its factorization.

1305664333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 34.

The square root of 1305664333 is about 36133.9775419203. The cubic root of 1305664333 is about 1092.9757178515.

The spelling of 1305664333 in words is "one billion, three hundred five million, six hundred sixty-four thousand, three hundred thirty-three".