1944359369 has 2 divisors, whose sum is σ = 1944359370. Its totient is φ = 1944359368.

The previous prime is 1944359311. The next prime is 1944359371. The reversal of 1944359369 is 9639534491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1309571344 + 634788025 = 36188^2 + 25195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1944359369 is a prime.

It is a super-2 number, since 2×1944359369² = 7561066711636156322, which contains 22 as substring.

Together with 1944359371, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1944359369.

It is not a weakly prime, because it can be changed into another prime (1944359399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972179684 + 972179685.

It is an arithmetic number, because the mean of its divisors is an integer number (972179685).

Almost surely, 2^1944359369 is an apocalyptic number.

It is an amenable number.

1944359369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944359369 is an equidigital number, since it uses as much as digits as its factorization.

1944359369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 53.

The square root of 1944359369 is about 44094.8905089921. The cubic root of 1944359369 is about 1248.1271942001.

The spelling of 1944359369 in words is "one billion, nine hundred forty-four million, three hundred fifty-nine thousand, three hundred sixty-nine".