1440320053 has 16 divisors (see below), whose sum is σ = 1634376960. Its totient is φ = 1261598976.

The previous prime is 1440320039. The next prime is 1440320083. The reversal of 1440320053 is 3500230441.

It is a cyclic number.

It is not a de Polignac number, because 1440320053 - 2⁹ = 1440319541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440320083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35313 + ... + 64246.

It is an arithmetic number, because the mean of its divisors is an integer number (102148560).

Almost surely, 2^1440320053 is an apocalyptic number.

It is an amenable number.

1440320053 is a deficient number, since it is larger than the sum of its proper divisors (194056907).

1440320053 is a wasteful number, since it uses less digits than its factorization.

1440320053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99636.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1440320053 is about 37951.5487562761. The cubic root of 1440320053 is about 1129.3268899610.

Adding to 1440320053 its reverse (3500230441), we get a palindrome (4940550494).

The spelling of 1440320053 in words is "one billion, four hundred forty million, three hundred twenty thousand, fifty-three".