3647213243 has 2 divisors, whose sum is σ = 3647213244. Its totient is φ = 3647213242.

The previous prime is 3647213239. The next prime is 3647213249. The reversal of 3647213243 is 3423127463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3647213243 - 2² = 3647213239 is a prime.

It is not a weakly prime, because it can be changed into another prime (3647213249) 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, 1823606621 + 1823606622.

It is an arithmetic number, because the mean of its divisors is an integer number (1823606622).

Almost surely, 2^3647213243 is an apocalyptic number.

3647213243 is a deficient number, since it is larger than the sum of its proper divisors (1).

3647213243 is an equidigital number, since it uses as much as digits as its factorization.

3647213243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 35.

The square root of 3647213243 is about 60392.1620990671. The cubic root of 3647213243 is about 1539.2897780626.

The spelling of 3647213243 in words is "three billion, six hundred forty-seven million, two hundred thirteen thousand, two hundred forty-three".