1944648342789 has 16 divisors (see below), whose sum is σ = 2614737894528. Its totient is φ = 1285529424192.

The previous prime is 1944648342761. The next prime is 1944648342799. The reversal of 1944648342789 is 9872438464491.

It is not a de Polignac number, because 1944648342789 - 2⁹ = 1944648342277 is a prime.

It is a super-2 number, since 2×1944648342789² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944648342719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4009602 + ... + 4468355.

It is an arithmetic number, because the mean of its divisors is an integer number (163421118408).

Almost surely, 2^{1944648342789} is an apocalyptic number.

It is an amenable number.

1944648342789 is a deficient number, since it is larger than the sum of its proper divisors (670089551739).

1944648342789 is a wasteful number, since it uses less digits than its factorization.

1944648342789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8478604.

The product of its digits is 334430208, while the sum is 69.

The spelling of 1944648342789 in words is "one trillion, nine hundred forty-four billion, six hundred forty-eight million, three hundred forty-two thousand, seven hundred eighty-nine".