1489383840 has 384 divisors, whose sum is σ = 5635768320. Its totient is φ = 323481600.

The previous prime is 1489383823. The next prime is 1489383851. The reversal of 1489383840 is 483839841.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1489383840.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8228550 + ... + 8228730.

It is an arithmetic number, because the mean of its divisors is an integer number (14676480).

Almost surely, 2^1489383840 is an apocalyptic number.

1489383840 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 1489383840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2817884160).

1489383840 is an abundant number, since it is smaller than the sum of its proper divisors (4146384480).

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

1489383840 is a wasteful number, since it uses less digits than its factorization.

1489383840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 1489383840 is about 38592.5360659286. The cubic root of 1489383840 is about 1142.0072976041.

The spelling of 1489383840 in words is "one billion, four hundred eighty-nine million, three hundred eighty-three thousand, eight hundred forty".