3868778443 has 2 divisors, whose sum is σ = 3868778444. Its totient is φ = 3868778442.

The previous prime is 3868778377. The next prime is 3868778467. The reversal of 3868778443 is 3448778683.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3868778443 - 2⁹ = 3868777931 is a prime.

It is not a weakly prime, because it can be changed into another prime (3868478443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934389221 + 1934389222.

It is an arithmetic number, because the mean of its divisors is an integer number (1934389222).

Almost surely, 2^3868778443 is an apocalyptic number.

3868778443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3868778443 is an equidigital number, since it uses as much as digits as its factorization.

3868778443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21676032, while the sum is 58.

The square root of 3868778443 is about 62199.5051668420. The cubic root of 3868778443 is about 1569.8492617662.

The spelling of 3868778443 in words is "three billion, eight hundred sixty-eight million, seven hundred seventy-eight thousand, four hundred forty-three".