3643246213 has 2 divisors, whose sum is σ = 3643246214. Its totient is φ = 3643246212.

The previous prime is 3643246199. The next prime is 3643246241. The reversal of 3643246213 is 3126423463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2302368289 + 1340877924 = 47983^2 + 36618^2 .

It is an emirp because it is prime and its reverse (3126423463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3643246213 - 2²⁹ = 3106375301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3643246613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821623106 + 1821623107.

It is an arithmetic number, because the mean of its divisors is an integer number (1821623107).

Almost surely, 2^3643246213 is an apocalyptic number.

It is an amenable number.

3643246213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643246213 is an equidigital number, since it uses as much as digits as its factorization.

3643246213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 34.

The square root of 3643246213 is about 60359.3092488640. The cubic root of 3643246213 is about 1538.7314866023.

Adding to 3643246213 its reverse (3126423463), we get a palindrome (6769669676).

The spelling of 3643246213 in words is "three billion, six hundred forty-three million, two hundred forty-six thousand, two hundred thirteen".