3968783813 has 2 divisors, whose sum is σ = 3968783814. Its totient is φ = 3968783812.

The previous prime is 3968783801. The next prime is 3968783827. The reversal of 3968783813 is 3183878693.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3611649409 + 357134404 = 60097^2 + 18898^2 .

It is an emirp because it is prime and its reverse (3183878693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3968783813 - 2¹⁶ = 3968718277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3968783713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984391906 + 1984391907.

It is an arithmetic number, because the mean of its divisors is an integer number (1984391907).

Almost surely, 2^3968783813 is an apocalyptic number.

It is an amenable number.

3968783813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3968783813 is an equidigital number, since it uses as much as digits as its factorization.

3968783813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 3968783813 is about 62998.2842067941. The cubic root of 3968783813 is about 1583.2608791764.

The spelling of 3968783813 in words is "three billion, nine hundred sixty-eight million, seven hundred eighty-three thousand, eight hundred thirteen".