3965353643 has 2 divisors, whose sum is σ = 3965353644. Its totient is φ = 3965353642.

The previous prime is 3965353633. The next prime is 3965353723. The reversal of 3965353643 is 3463535693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3965353643 - 2¹² = 3965349547 is a prime.

It is not a weakly prime, because it can be changed into another prime (3965353633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982676821 + 1982676822.

It is an arithmetic number, because the mean of its divisors is an integer number (1982676822).

Almost surely, 2^3965353643 is an apocalyptic number.

3965353643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3965353643 is an equidigital number, since it uses as much as digits as its factorization.

3965353643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 47.

The square root of 3965353643 is about 62971.0540089651. The cubic root of 3965353643 is about 1582.8046168734.

The spelling of 3965353643 in words is "three billion, nine hundred sixty-five million, three hundred fifty-three thousand, six hundred forty-three".