3818220779 has 2 divisors, whose sum is σ = 3818220780. Its totient is φ = 3818220778.

The previous prime is 3818220739. The next prime is 3818220781. The reversal of 3818220779 is 9770228183.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3818220779 is a prime.

Together with 3818220781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3818220739) 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, 1909110389 + 1909110390.

It is an arithmetic number, because the mean of its divisors is an integer number (1909110390).

Almost surely, 2^3818220779 is an apocalyptic number.

3818220779 is a deficient number, since it is larger than the sum of its proper divisors (1).

3818220779 is an equidigital number, since it uses as much as digits as its factorization.

3818220779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 3818220779 is about 61791.7533251809. The cubic root of 3818220779 is about 1562.9809289836.

The spelling of 3818220779 in words is "three billion, eight hundred eighteen million, two hundred twenty thousand, seven hundred seventy-nine".