1489686660 has 288 divisors, whose sum is σ = 5823740160. Its totient is φ = 309450240.

The previous prime is 1489686623. The next prime is 1489686721. The reversal of 1489686660 is 666869841.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1489686597 and 1489686606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 455752 + ... + 459008.

It is an arithmetic number, because the mean of its divisors is an integer number (20221320).

Almost surely, 2^1489686660 is an apocalyptic number.

1489686660 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 1489686660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2911870080).

1489686660 is an abundant number, since it is smaller than the sum of its proper divisors (4334053500).

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

1489686660 is a wasteful number, since it uses less digits than its factorization.

1489686660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304 (or 3285 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 1489686660 is about 38596.4591640218. The cubic root of 1489686660 is about 1142.0846896114.

The spelling of 1489686660 in words is "one billion, four hundred eighty-nine million, six hundred eighty-six thousand, six hundred sixty".