1440331148 has 24 divisors (see below), whose sum is σ = 2599430400. Its totient is φ = 697873280.

The previous prime is 1440331147. The next prime is 1440331163. The reversal of 1440331148 is 8411330441.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440331148.

It is not an unprimeable number, because it can be changed into a prime (1440331141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5036 + ... + 53907.

It is an arithmetic number, because the mean of its divisors is an integer number (108309600).

Almost surely, 2^1440331148 is an apocalyptic number.

It is an amenable number.

1440331148 is a deficient number, since it is larger than the sum of its proper divisors (1159099252).

1440331148 is a wasteful number, since it uses less digits than its factorization.

1440331148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59137 (or 59135 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1440331148 is about 37951.6949292123. The cubic root of 1440331148 is about 1129.3297897446.

Adding to 1440331148 its reverse (8411330441), we get a palindrome (9851661589).

The spelling of 1440331148 in words is "one billion, four hundred forty million, three hundred thirty-one thousand, one hundred forty-eight".