1389483180 has 96 divisors (see below), whose sum is σ = 4338694080. Its totient is φ = 369169920.

The previous prime is 1389483169. The next prime is 1389483187. The reversal of 1389483180 is 813849831.

1389483180 is a `hidden beast` number, since 13 + 89 + 483 + 1 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1389483187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147162 + ... + 156318.

It is an arithmetic number, because the mean of its divisors is an integer number (45194730).

Almost surely, 2^1389483180 is an apocalyptic number.

1389483180 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 1389483180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2169347040).

1389483180 is an abundant number, since it is smaller than the sum of its proper divisors (2949210900).

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

1389483180 is a wasteful number, since it uses less digits than its factorization.

1389483180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9456 (or 9448 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1389483180 is about 37275.7720241982. The cubic root of 1389483180 is about 1115.8806959989.

The spelling of 1389483180 in words is "one billion, three hundred eighty-nine million, four hundred eighty-three thousand, one hundred eighty".