1389732048 has 120 divisors (see below), whose sum is σ = 4334990400. Its totient is φ = 413033472.

The previous prime is 1389732041. The next prime is 1389732053. The reversal of 1389732048 is 8402379831.

It is a junction number, because it is equal to n+sod(n) for n = 1389731994 and 1389732012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389732041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31573 + ... + 61451.

It is an arithmetic number, because the mean of its divisors is an integer number (36124920).

Almost surely, 2^1389732048 is an apocalyptic number.

1389732048 is a gapful number since it is divisible by the number (18) 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 1389732048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167495200).

1389732048 is an abundant number, since it is smaller than the sum of its proper divisors (2945258352).

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

1389732048 is a wasteful number, since it uses less digits than its factorization.

1389732048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29929 (or 29920 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1389732048 is about 37279.1100752150. The cubic root of 1389732048 is about 1115.9473131946.

The spelling of 1389732048 in words is "one billion, three hundred eighty-nine million, seven hundred thirty-two thousand, forty-eight".