1944434344417 has 2 divisors, whose sum is σ = 1944434344418. Its totient is φ = 1944434344416.

The previous prime is 1944434344409. The next prime is 1944434344429. The reversal of 1944434344417 is 7144434344491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1334912187456 + 609522156961 = 1155384^2 + 780719^2 .

It is an emirp because it is prime and its reverse (7144434344491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1944434344417 - 2³ = 1944434344409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1944434344477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972217172208 + 972217172209.

It is an arithmetic number, because the mean of its divisors is an integer number (972217172209).

Almost surely, 2^{1944434344417} is an apocalyptic number.

It is an amenable number.

1944434344417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944434344417 is an equidigital number, since it uses as much as digits as its factorization.

1944434344417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 52.

The spelling of 1944434344417 in words is "one trillion, nine hundred forty-four billion, four hundred thirty-four million, three hundred forty-four thousand, four hundred seventeen".