1489137768 has 96 divisors (see below), whose sum is σ = 4254400800. Its totient is φ = 469252224.

The previous prime is 1489137751. The next prime is 1489137781. The reversal of 1489137768 is 8677319841.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 892471 + ... + 894137.

It is an arithmetic number, because the mean of its divisors is an integer number (44316675).

Almost surely, 2^1489137768 is an apocalyptic number.

1489137768 is a gapful number since it is divisible by the number (18) 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 1489137768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2127200400).

1489137768 is an abundant number, since it is smaller than the sum of its proper divisors (2765263032).

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

1489137768 is a wasteful number, since it uses less digits than its factorization.

1489137768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2344 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 1489137768 is about 38589.3478566301. The cubic root of 1489137768 is about 1141.9444010134.

The spelling of 1489137768 in words is "one billion, four hundred eighty-nine million, one hundred thirty-seven thousand, seven hundred sixty-eight".