1444748189 has 2 divisors, whose sum is σ = 1444748190. Its totient is φ = 1444748188.

The previous prime is 1444748177. The next prime is 1444748191. The reversal of 1444748189 is 9818474441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1331155225 + 113592964 = 36485^2 + 10658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444748189 - 2⁸ = 1444747933 is a prime.

Together with 1444748191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444748089) 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, 722374094 + 722374095.

It is an arithmetic number, because the mean of its divisors is an integer number (722374095).

Almost surely, 2^1444748189 is an apocalyptic number.

It is an amenable number.

1444748189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444748189 is an equidigital number, since it uses as much as digits as its factorization.

1444748189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1032192, while the sum is 50.

The square root of 1444748189 is about 38009.8433172251. The cubic root of 1444748189 is about 1130.4830443241.

The spelling of 1444748189 in words is "one billion, four hundred forty-four million, seven hundred forty-eight thousand, one hundred eighty-nine".