1389466320 has 160 divisors (see below), whose sum is σ = 4718162304. Its totient is φ = 335462400.

The previous prime is 1389466313. The next prime is 1389466327. The reversal of 1389466320 is 236649831.

It is an interprime number because it is at equal distance from previous prime (1389466313) and next prime (1389466327).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389466327) 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 31 ways as a sum of consecutive naturals, for example, 740904 + ... + 742776.

Almost surely, 2^1389466320 is an apocalyptic number.

1389466320 is a gapful number since it is divisible by the number (10) 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 1389466320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359081152).

1389466320 is an abundant number, since it is smaller than the sum of its proper divisors (3328695984).

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

1389466320 is a wasteful number, since it uses less digits than its factorization.

1389466320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 1389466320 is about 37275.5458712545. The cubic root of 1389466320 is about 1115.8761826122.

The spelling of 1389466320 in words is "one billion, three hundred eighty-nine million, four hundred sixty-six thousand, three hundred twenty".