4378772819 has 2 divisors, whose sum is σ = 4378772820. Its totient is φ = 4378772818.

The previous prime is 4378772803. The next prime is 4378772837. The reversal of 4378772819 is 9182778734.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4378772819 - 2⁴ = 4378772803 is a prime.

It is a super-4 number, since 4×4378772819⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4378702819) 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, 2189386409 + 2189386410.

It is an arithmetic number, because the mean of its divisors is an integer number (2189386410).

Almost surely, 2^4378772819 is an apocalyptic number.

4378772819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4378772819 is an equidigital number, since it uses as much as digits as its factorization.

4378772819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 56.

The square root of 4378772819 is about 66172.2964615858. The cubic root of 4378772819 is about 1636.0031587258.

The spelling of 4378772819 in words is "four billion, three hundred seventy-eight million, seven hundred seventy-two thousand, eight hundred nineteen".