1389344105526 has 32 divisors (see below), whose sum is σ = 2993950481760. Its totient is φ = 427273776384.

The previous prime is 1389344105519. The next prime is 1389344105581. The reversal of 1389344105526 is 6255014439831.

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, 4360071 + ... + 4667858.

It is an arithmetic number, because the mean of its divisors is an integer number (93560952555).

Almost surely, 2^{1389344105526} is an apocalyptic number.

1389344105526 is an abundant number, since it is smaller than the sum of its proper divisors (1604606376234).

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

1389344105526 is a wasteful number, since it uses less digits than its factorization.

1389344105526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9029920.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 1389344105526 in words is "one trillion, three hundred eighty-nine billion, three hundred forty-four million, one hundred five thousand, five hundred twenty-six".