1440481144 has 8 divisors (see below), whose sum is σ = 2700902160. Its totient is φ = 720240568.

The previous prime is 1440481129. The next prime is 1440481171. The reversal of 1440481144 is 4411840441.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90030064 + ... + 90030079.

It is an arithmetic number, because the mean of its divisors is an integer number (337612770).

Almost surely, 2^1440481144 is an apocalyptic number.

It is an amenable number.

1440481144 is a deficient number, since it is larger than the sum of its proper divisors (1260421016).

1440481144 is a wasteful number, since it uses less digits than its factorization.

1440481144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180060149 (or 180060145 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 1440481144 is about 37953.6710213913. The cubic root of 1440481144 is about 1129.3689911629.

The spelling of 1440481144 in words is "one billion, four hundred forty million, four hundred eighty-one thousand, one hundred forty-four".