8219483777 has 2 divisors, whose sum is σ = 8219483778. Its totient is φ = 8219483776.

The previous prime is 8219483773. The next prime is 8219483801. The reversal of 8219483777 is 7773849128.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8159328241 + 60155536 = 90329^2 + 7756^2 .

It is a cyclic number.

It is not a de Polignac number, because 8219483777 - 2² = 8219483773 is a prime.

It is not a weakly prime, because it can be changed into another prime (8219483773) 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, 4109741888 + 4109741889.

It is an arithmetic number, because the mean of its divisors is an integer number (4109741889).

Almost surely, 2^8219483777 is an apocalyptic number.

It is an amenable number.

8219483777 is a deficient number, since it is larger than the sum of its proper divisors (1).

8219483777 is an equidigital number, since it uses as much as digits as its factorization.

8219483777 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 8219483777 is about 90661.3687134713. The cubic root of 8219483777 is about 2018.1255507149.

The spelling of 8219483777 in words is "eight billion, two hundred nineteen million, four hundred eighty-three thousand, seven hundred seventy-seven".