1389061939356 has 864 divisors, whose sum is σ = 4893872256000. Its totient is φ = 327826953216.

The previous prime is 1389061939351. The next prime is 1389061939379. The reversal of 1389061939356 is 6539391609831.

1389061939356 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 0 + 619 + 3 + 9 + 3 + 5 + 6 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1389061939293 and 1389061939302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389061939351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 593868835 + ... + 593871173.

It is an arithmetic number, because the mean of its divisors is an integer number (5664204000).

Almost surely, 2^{1389061939356} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389061939356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2446936128000).

1389061939356 is an abundant number, since it is smaller than the sum of its proper divisors (3504810316644).

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

1389061939356 is a wasteful number, since it uses less digits than its factorization.

1389061939356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 28343520, while the sum is 63.

The spelling of 1389061939356 in words is "one trillion, three hundred eighty-nine billion, sixty-one million, nine hundred thirty-nine thousand, three hundred fifty-six".