3318220813 has 2 divisors, whose sum is σ = 3318220814. Its totient is φ = 3318220812.

The previous prime is 3318220783. The next prime is 3318220817. The reversal of 3318220813 is 3180228133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3317414409 + 806404 = 57597^2 + 898^2 .

It is an emirp because it is prime and its reverse (3180228133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3318220813 - 2¹⁷ = 3318089741 is a prime.

It is a super-2 number, since 2×3318220813² = 22021178727652761938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3318220817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1659110406 + 1659110407.

It is an arithmetic number, because the mean of its divisors is an integer number (1659110407).

Almost surely, 2^3318220813 is an apocalyptic number.

It is an amenable number.

3318220813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3318220813 is an equidigital number, since it uses as much as digits as its factorization.

3318220813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 3318220813 is about 57603.9999739601. Note that the first 4 decimals coincide. The cubic root of 3318220813 is about 1491.5406512204.

Adding to 3318220813 its reverse (3180228133), we get a palindrome (6498448946).

The spelling of 3318220813 in words is "three billion, three hundred eighteen million, two hundred twenty thousand, eight hundred thirteen".