1389560832 has 220 divisors, whose sum is σ = 4529699856. Its totient is φ = 420802560.

The previous prime is 1389560831. The next prime is 1389560869. The reversal of 1389560832 is 2380659831.

It is a happy number.

1389560832 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 5 + 608 + 32 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1389560831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 911623 + ... + 913145.

Almost surely, 2^1389560832 is an apocalyptic number.

1389560832 is a gapful number since it is divisible by the number (12) 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 1389560832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2264849928).

1389560832 is an abundant number, since it is smaller than the sum of its proper divisors (3140139024).

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

1389560832 is a wasteful number, since it uses less digits than its factorization.

1389560832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1389560832 is about 37276.8135977312. The cubic root of 1389560832 is about 1115.9014828054.

The spelling of 1389560832 in words is "one billion, three hundred eighty-nine million, five hundred sixty thousand, eight hundred thirty-two".