1389944841600 has 768 divisors, whose sum is σ = 5387987289600. Its totient is φ = 308286259200.

The previous prime is 1389944841589. The next prime is 1389944841617. The reversal of 1389944841600 is 61484499831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1718101996 + ... + 1718102804.

It is an arithmetic number, because the mean of its divisors is an integer number (7015608450).

Almost surely, 2^{1389944841600} is an apocalyptic number.

1389944841600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389944841600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2693993644800).

1389944841600 is an abundant number, since it is smaller than the sum of its proper divisors (3998042448000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389944841600 is a wasteful number, since it uses less digits than its factorization.

1389944841600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 1389944841600 in words is "one trillion, three hundred eighty-nine billion, nine hundred forty-four million, eight hundred forty-one thousand, six hundred".