1589489664 has 208 divisors, whose sum is σ = 5133201408. Its totient is φ = 427032576.

The previous prime is 1589489659. The next prime is 1589489683. The reversal of 1589489664 is 4669849851.

It is a junction number, because it is equal to n+sod(n) for n = 1589489598 and 1589489607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461729 + ... + 1462815.

Almost surely, 2^1589489664 is an apocalyptic number.

1589489664 is a gapful number since it is divisible by the number (14) 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 1589489664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2566600704).

1589489664 is an abundant number, since it is smaller than the sum of its proper divisors (3543711744).

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

1589489664 is a wasteful number, since it uses less digits than its factorization.

1589489664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1116 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The square root of 1589489664 is about 39868.4043322529. The cubic root of 1589489664 is about 1167.0404328783.

The spelling of 1589489664 in words is "one billion, five hundred eighty-nine million, four hundred eighty-nine thousand, six hundred sixty-four".