1605214313 has 2 divisors, whose sum is σ = 1605214314. Its totient is φ = 1605214312.

The previous prime is 1605214283. The next prime is 1605214337. The reversal of 1605214313 is 3134125061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537267264 + 67947049 = 39208^2 + 8243^2 .

It is a cyclic number.

It is not a de Polignac number, because 1605214313 - 2⁶ = 1605214249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1605214393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802607156 + 802607157.

It is an arithmetic number, because the mean of its divisors is an integer number (802607157).

Almost surely, 2^1605214313 is an apocalyptic number.

It is an amenable number.

1605214313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605214313 is an equidigital number, since it uses as much as digits as its factorization.

1605214313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1605214313 is about 40065.1258952221. The cubic root of 1605214313 is about 1170.8762795233.

Adding to 1605214313 its reverse (3134125061), we get a palindrome (4739339374).

The spelling of 1605214313 in words is "one billion, six hundred five million, two hundred fourteen thousand, three hundred thirteen".