1604263313 has 2 divisors, whose sum is σ = 1604263314. Its totient is φ = 1604263312.

The previous prime is 1604263303. The next prime is 1604263319. The reversal of 1604263313 is 3133624061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1218219409 + 386043904 = 34903^2 + 19648^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604263313 - 2⁶ = 1604263249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1604263319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802131656 + 802131657.

It is an arithmetic number, because the mean of its divisors is an integer number (802131657).

Almost surely, 2^1604263313 is an apocalyptic number.

It is an amenable number.

1604263313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604263313 is an equidigital number, since it uses as much as digits as its factorization.

1604263313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 1604263313 is about 40053.2559600340. The cubic root of 1604263313 is about 1170.6450075364.

Adding to 1604263313 its reverse (3133624061), we get a palindrome (4737887374).

The spelling of 1604263313 in words is "one billion, six hundred four million, two hundred sixty-three thousand, three hundred thirteen".