1440163055 has 16 divisors (see below), whose sum is σ = 1865522880. Its totient is φ = 1064034048.

The previous prime is 1440163051. The next prime is 1440163069. The reversal of 1440163055 is 5503610441.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1440163055 - 2² = 1440163051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440163051) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 212582 + ... + 219251.

It is an arithmetic number, because the mean of its divisors is an integer number (116595180).

Almost surely, 2^1440163055 is an apocalyptic number.

1440163055 is a deficient number, since it is larger than the sum of its proper divisors (425359825).

1440163055 is a wasteful number, since it uses less digits than its factorization.

1440163055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431890.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1440163055 is about 37949.4802994718. The cubic root of 1440163055 is about 1129.2858554457.

Adding to 1440163055 its reverse (5503610441), we get a palindrome (6943773496).

The spelling of 1440163055 in words is "one billion, four hundred forty million, one hundred sixty-three thousand, fifty-five".