1389862453980 has 768 divisors, whose sum is σ = 5602820751360. Its totient is φ = 247715020800.

The previous prime is 1389862453937. The next prime is 1389862454047. The reversal of 1389862453980 is 893542689831.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 80651965 + ... + 80669195.

It is an arithmetic number, because the mean of its divisors is an integer number (7295339520).

Almost surely, 2^{1389862453980} is an apocalyptic number.

1389862453980 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 1389862453980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2801410375680).

1389862453980 is an abundant number, since it is smaller than the sum of its proper divisors (4212958297380).

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

1389862453980 is a wasteful number, since it uses less digits than its factorization.

1389862453980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17370 (or 17368 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 66.

The spelling of 1389862453980 in words is "one trillion, three hundred eighty-nine billion, eight hundred sixty-two million, four hundred fifty-three thousand, nine hundred eighty".