4818778189 has 2 divisors, whose sum is σ = 4818778190. Its totient is φ = 4818778188.

The previous prime is 4818778169. The next prime is 4818778207. The reversal of 4818778189 is 9818778184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4808312964 + 10465225 = 69342^2 + 3235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4818778189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4818778109) 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, 2409389094 + 2409389095.

It is an arithmetic number, because the mean of its divisors is an integer number (2409389095).

Almost surely, 2^4818778189 is an apocalyptic number.

It is an amenable number.

4818778189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4818778189 is an equidigital number, since it uses as much as digits as its factorization.

4818778189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7225344, while the sum is 61.

The square root of 4818778189 is about 69417.4199246846. The cubic root of 4818778189 is about 1689.0622096576.

The spelling of 4818778189 in words is "four billion, eight hundred eighteen million, seven hundred seventy-eight thousand, one hundred eighty-nine".