1389084515280 has 1280 divisors, whose sum is σ = 6336108748800. Its totient is φ = 270804418560.

The previous prime is 1389084515257. The next prime is 1389084515309. The reversal of 1389084515280 is 825154809831.

1389084515280 is a `hidden beast` number, since 1 + 38 + 9 + 0 + 84 + 5 + 1 + 528 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1252555366 + ... + 1252556474.

It is an arithmetic number, because the mean of its divisors is an integer number (4950084960).

Almost surely, 2^{1389084515280} is an apocalyptic number.

1389084515280 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 1389084515280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3168054374400).

1389084515280 is an abundant number, since it is smaller than the sum of its proper divisors (4947024233520).

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

1389084515280 is a wasteful number, since it uses less digits than its factorization.

1389084515280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609 (or 1597 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 1389084515280 in words is "one trillion, three hundred eighty-nine billion, eighty-four million, five hundred fifteen thousand, two hundred eighty".