2144776189 has 2 divisors, whose sum is σ = 2144776190. Its totient is φ = 2144776188.

The previous prime is 2144776187. The next prime is 2144776211. The reversal of 2144776189 is 9816774412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2129822500 + 14953689 = 46150^2 + 3867^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144776189 - 2¹ = 2144776187 is a prime.

Together with 2144776187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144776181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072388094 + 1072388095.

It is an arithmetic number, because the mean of its divisors is an integer number (1072388095).

Almost surely, 2^2144776189 is an apocalyptic number.

It is an amenable number.

2144776189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144776189 is an equidigital number, since it uses as much as digits as its factorization.

2144776189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 2144776189 is about 46311.7284173243. The cubic root of 2144776189 is about 1289.6167338863.

The spelling of 2144776189 in words is "two billion, one hundred forty-four million, seven hundred seventy-six thousand, one hundred eighty-nine".