1440448145 has 8 divisors (see below), whose sum is σ = 1729385640. Its totient is φ = 1151793280.

The previous prime is 1440448127. The next prime is 1440448187. The reversal of 1440448145 is 5418440441.

It can be written as a sum of positive squares in 4 ways, for example, as 237190801 + 1203257344 = 15401^2 + 34688^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440448145 - 2⁶ = 1440448081 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59276 + ... + 79965.

It is an arithmetic number, because the mean of its divisors is an integer number (216173205).

Almost surely, 2^1440448145 is an apocalyptic number.

It is an amenable number.

1440448145 is a deficient number, since it is larger than the sum of its proper divisors (288937495).

1440448145 is a wasteful number, since it uses less digits than its factorization.

1440448145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141315.

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 1440448145 is about 37953.2362915206. The cubic root of 1440448145 is about 1129.3603671157.

Adding to 1440448145 its reverse (5418440441), we get a palindrome (6858888586).

The spelling of 1440448145 in words is "one billion, four hundred forty million, four hundred forty-eight thousand, one hundred forty-five".