1489438368 has 216 divisors, whose sum is σ = 4831130304. Its totient is φ = 451059840.

The previous prime is 1489438361. The next prime is 1489438387. The reversal of 1489438368 is 8638349841.

1489438368 is a `hidden beast` number, since 148 + 9 + 438 + 3 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1489438361) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 940105 + ... + 941687.

It is an arithmetic number, because the mean of its divisors is an integer number (22366344).

Almost surely, 2^1489438368 is an apocalyptic number.

1489438368 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 1489438368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2415565152).

1489438368 is an abundant number, since it is smaller than the sum of its proper divisors (3341691936).

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

1489438368 is a wasteful number, since it uses less digits than its factorization.

1489438368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1599 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 1489438368 is about 38593.2425173112. The cubic root of 1489438368 is about 1142.0212341534.

The spelling of 1489438368 in words is "one billion, four hundred eighty-nine million, four hundred thirty-eight thousand, three hundred sixty-eight".