1389068832 has 96 divisors (see below), whose sum is σ = 3844399104. Its totient is φ = 438508800.

The previous prime is 1389068803. The next prime is 1389068851. The reversal of 1389068832 is 2388609831.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134907 + ... + 144837.

It is an arithmetic number, because the mean of its divisors is an integer number (40045824).

Almost surely, 2^1389068832 is an apocalyptic number.

1389068832 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 1389068832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1922199552).

1389068832 is an abundant number, since it is smaller than the sum of its proper divisors (2455330272).

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

1389068832 is a wasteful number, since it uses less digits than its factorization.

1389068832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10022 (or 10014 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 1389068832 is about 37270.2137369777. The cubic root of 1389068832 is about 1115.7697653286.

The spelling of 1389068832 in words is "one billion, three hundred eighty-nine million, sixty-eight thousand, eight hundred thirty-two".