3978056419 has 2 divisors, whose sum is σ = 3978056420. Its totient is φ = 3978056418.

The previous prime is 3978056417. The next prime is 3978056437. The reversal of 3978056419 is 9146508793.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3978056419 - 2¹ = 3978056417 is a prime.

It is a super-2 number, since 2×3978056419² = 31649865745494207122, which contains 22 as substring.

Together with 3978056417, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3978056413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989028209 + 1989028210.

It is an arithmetic number, because the mean of its divisors is an integer number (1989028210).

Almost surely, 2^3978056419 is an apocalyptic number.

3978056419 is a deficient number, since it is larger than the sum of its proper divisors (1).

3978056419 is an equidigital number, since it uses as much as digits as its factorization.

3978056419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 3978056419 is about 63071.8353863275. The cubic root of 3978056419 is about 1584.4929556666.

The spelling of 3978056419 in words is "three billion, nine hundred seventy-eight million, fifty-six thousand, four hundred nineteen".