1389453640848 has 1440 divisors, whose sum is σ = 5455263340800. Its totient is φ = 325693218816.

The previous prime is 1389453640721. The next prime is 1389453640889. The reversal of 1389453640848 is 8480463549831.

1389453640848 is a `hidden beast` number, since 1 + 3 + 8 + 94 + 536 + 4 + 0 + 8 + 4 + 8 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1870058365 + ... + 1870059107.

It is an arithmetic number, because the mean of its divisors is an integer number (3788377320).

Almost surely, 2^{1389453640848} is an apocalyptic number.

1389453640848 is a gapful number since it is divisible by the number (18) 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 1389453640848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2727631670400).

1389453640848 is an abundant number, since it is smaller than the sum of its proper divisors (4065809699952).

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

1389453640848 is a wasteful number, since it uses less digits than its factorization.

1389453640848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 1389453640848 in words is "one trillion, three hundred eighty-nine billion, four hundred fifty-three million, six hundred forty thousand, eight hundred forty-eight".