1484378440 has 64 divisors (see below), whose sum is σ = 3429423360. Its totient is φ = 577966080.

The previous prime is 1484378417. The next prime is 1484378449. The reversal of 1484378440 is 448734841.

It is not an unprimeable number, because it can be changed into a prime (1484378449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360795 + ... + 364885.

It is an arithmetic number, because the mean of its divisors is an integer number (53584740).

Almost surely, 2^1484378440 is an apocalyptic number.

1484378440 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 1484378440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1714711680).

1484378440 is an abundant number, since it is smaller than the sum of its proper divisors (1945044920).

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

1484378440 is a wasteful number, since it uses less digits than its factorization.

1484378440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342 (or 4338 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 43.

The square root of 1484378440 is about 38527.6321618653. The cubic root of 1484378440 is about 1140.7265400466.

The spelling of 1484378440 in words is "one billion, four hundred eighty-four million, three hundred seventy-eight thousand, four hundred forty".