1389289660416 has 224 divisors, whose sum is σ = 4704191028480. Its totient is φ = 396939460608.

The previous prime is 1389289660393. The next prime is 1389289660477. The reversal of 1389289660416 is 6140669829831.

1389289660416 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 2 + 8 + 9 + 6 + 604 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1099635 + ... + 1996941.

Almost surely, 2^{1389289660416} is an apocalyptic number.

1389289660416 is a gapful number since it is divisible by the number (16) 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 1389289660416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2352095514240).

1389289660416 is an abundant number, since it is smaller than the sum of its proper divisors (3314901368064).

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

1389289660416 is an frugal number, since it uses more digits than its factorization.

1389289660416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897349 (or 897319 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 1389289660416 in words is "one trillion, three hundred eighty-nine billion, two hundred eighty-nine million, six hundred sixty thousand, four hundred sixteen".