1440140013 has 16 divisors (see below), whose sum is σ = 2297659840. Its totient is φ = 886239792.

The previous prime is 1440140003. The next prime is 1440140077. The reversal of 1440140013 is 3100410441.

It is not a de Polignac number, because 1440140013 - 2⁴ = 1440139997 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 (1440140003) 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, 2051131 + ... + 2051832.

It is an arithmetic number, because the mean of its divisors is an integer number (143603740).

Almost surely, 2^1440140013 is an apocalyptic number.

1440140013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1440140013 is a deficient number, since it is larger than the sum of its proper divisors (857519827).

1440140013 is a wasteful number, since it uses less digits than its factorization.

1440140013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102985 (or 4102979 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1440140013 is about 37949.1767104373. The cubic root of 1440140013 is about 1129.2798327149.

Adding to 1440140013 its reverse (3100410441), we get a palindrome (4540550454).

The spelling of 1440140013 in words is "one billion, four hundred forty million, one hundred forty thousand, thirteen".