1944425194289 has 2 divisors, whose sum is σ = 1944425194290. Its totient is φ = 1944425194288.

The previous prime is 1944425194213. The next prime is 1944425194333. The reversal of 1944425194289 is 9824915244491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1225504350625 + 718920843664 = 1107025^2 + 847892^2 .

It is an emirp because it is prime and its reverse (9824915244491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1944425194289 - 2¹⁶ = 1944425128753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1944425194189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972212597144 + 972212597145.

It is an arithmetic number, because the mean of its divisors is an integer number (972212597145).

Almost surely, 2^{1944425194289} is an apocalyptic number.

It is an amenable number.

1944425194289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944425194289 is an equidigital number, since it uses as much as digits as its factorization.

1944425194289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29859840, while the sum is 62.

The spelling of 1944425194289 in words is "one trillion, nine hundred forty-four billion, four hundred twenty-five million, one hundred ninety-four thousand, two hundred eighty-nine".