1003440144 has 40 divisors (see below), whose sum is σ = 2962538560. Its totient is φ = 286697088.

The previous prime is 1003440143. The next prime is 1003440167. The reversal of 1003440144 is 4410443001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1003440144.

It is not an unprimeable number, because it can be changed into a prime (1003440143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492879 + ... + 1493550.

It is an arithmetic number, because the mean of its divisors is an integer number (74063464).

Almost surely, 2^1003440144 is an apocalyptic number.

1003440144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1003440144 is an abundant number, since it is smaller than the sum of its proper divisors (1959098416).

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

1003440144 is a wasteful number, since it uses less digits than its factorization.

1003440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986447 (or 2986441 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1003440144 is about 31677.1233542441. The cubic root of 1003440144 is about 1001.1454022195.

Adding to 1003440144 its reverse (4410443001), we get a palindrome (5413883145).

The spelling of 1003440144 in words is "one billion, three million, four hundred forty thousand, one hundred forty-four".