1589889660 has 96 divisors (see below), whose sum is σ = 4509836352. Its totient is φ = 418467840.

The previous prime is 1589889659. The next prime is 1589889661. The reversal of 1589889660 is 669889851.

It is an interprime number because it is at equal distance from previous prime (1589889659) and next prime (1589889661).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 1589889594 and 1589889603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1589889661) 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, 2854102 + ... + 2854658.

It is an arithmetic number, because the mean of its divisors is an integer number (46977462).

Almost surely, 2^1589889660 is an apocalyptic number.

1589889660 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 1589889660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2254918176).

1589889660 is an abundant number, since it is smaller than the sum of its proper divisors (2919946692).

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

1589889660 is a wasteful number, since it uses less digits than its factorization.

1589889660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 60.

The square root of 1589889660 is about 39873.4204702832. The cubic root of 1589889660 is about 1167.1383201359.

The spelling of 1589889660 in words is "one billion, five hundred eighty-nine million, eight hundred eighty-nine thousand, six hundred sixty".