3646468321 has 2 divisors, whose sum is σ = 3646468322. Its totient is φ = 3646468320.

The previous prime is 3646468297. The next prime is 3646468349. The reversal of 3646468321 is 1238646463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2594374225 + 1052094096 = 50935^2 + 32436^2 .

It is a cyclic number.

It is not a de Polignac number, because 3646468321 - 2¹¹ = 3646466273 is a prime.

It is not a weakly prime, because it can be changed into another prime (3646468361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823234160 + 1823234161.

It is an arithmetic number, because the mean of its divisors is an integer number (1823234161).

Almost surely, 2^3646468321 is an apocalyptic number.

It is an amenable number.

3646468321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646468321 is an equidigital number, since it uses as much as digits as its factorization.

3646468321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 43.

The square root of 3646468321 is about 60385.9944109559. The cubic root of 3646468321 is about 1539.1849739453.

The spelling of 3646468321 in words is "three billion, six hundred forty-six million, four hundred sixty-eight thousand, three hundred twenty-one".