1389846912564 has 24 divisors (see below), whose sum is σ = 3537792141408. Its totient is φ = 421165731040.

The previous prime is 1389846912457. The next prime is 1389846912583. The reversal of 1389846912564 is 4652196489831.

It is a super-2 number, since 2×1389846912564² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1389846912495 and 1389846912504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5264571507 + ... + 5264571770.

It is an arithmetic number, because the mean of its divisors is an integer number (147408005892).

Almost surely, 2^{1389846912564} is an apocalyptic number.

It is an amenable number.

1389846912564 is an abundant number, since it is smaller than the sum of its proper divisors (2147945228844).

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

1389846912564 is a wasteful number, since it uses less digits than its factorization.

1389846912564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10529143295 (or 10529143293 counting only the distinct ones).

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

The spelling of 1389846912564 in words is "one trillion, three hundred eighty-nine billion, eight hundred forty-six million, nine hundred twelve thousand, five hundred sixty-four".