3936469643 has 2 divisors, whose sum is σ = 3936469644. Its totient is φ = 3936469642.

The previous prime is 3936469639. The next prime is 3936469681. The reversal of 3936469643 is 3469646393.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3936469643 - 2² = 3936469639 is a prime.

It is not a weakly prime, because it can be changed into another prime (3936469613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1968234821 + 1968234822.

It is an arithmetic number, because the mean of its divisors is an integer number (1968234822).

Almost surely, 2^3936469643 is an apocalyptic number.

3936469643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3936469643 is an equidigital number, since it uses as much as digits as its factorization.

3936469643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 53.

The square root of 3936469643 is about 62741.2913717912. The cubic root of 3936469643 is about 1578.9521497192.

The spelling of 3936469643 in words is "three billion, nine hundred thirty-six million, four hundred sixty-nine thousand, six hundred forty-three".