4256908819 has 2 divisors, whose sum is σ = 4256908820. Its totient is φ = 4256908818.

The previous prime is 4256908741. The next prime is 4256908837. The reversal of 4256908819 is 9188096524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4256908819 is a prime.

It is a super-2 number, since 2×4256908819² = 36242545386559949522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4256908889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128454409 + 2128454410.

It is an arithmetic number, because the mean of its divisors is an integer number (2128454410).

Almost surely, 2^4256908819 is an apocalyptic number.

4256908819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256908819 is an equidigital number, since it uses as much as digits as its factorization.

4256908819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 4256908819 is about 65244.9907579118. The cubic root of 4256908819 is about 1620.6831466965.

The spelling of 4256908819 in words is "four billion, two hundred fifty-six million, nine hundred eight thousand, eight hundred nineteen".