1440255213 has 6 divisors (see below), whose sum is σ = 2080368654. Its totient is φ = 960170136.

The previous prime is 1440255211. The next prime is 1440255221. The reversal of 1440255213 is 3125520441.

1440255213 is a `hidden beast` number, since 1 + 440 + 2 + 5 + 5 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 760766724 + 679488489 = 27582^2 + 26067^2 .

It is not a de Polignac number, because 1440255213 - 2¹ = 1440255211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440255211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80014170 + ... + 80014187.

It is an arithmetic number, because the mean of its divisors is an integer number (346728109).

Almost surely, 2^1440255213 is an apocalyptic number.

It is an amenable number.

1440255213 is a deficient number, since it is larger than the sum of its proper divisors (640113441).

1440255213 is a wasteful number, since it uses less digits than its factorization.

1440255213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160028363 (or 160028360 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1440255213 is about 37950.6944995740. The cubic root of 1440255213 is about 1129.3099431131.

Adding to 1440255213 its reverse (3125520441), we get a palindrome (4565775654).

The spelling of 1440255213 in words is "one billion, four hundred forty million, two hundred fifty-five thousand, two hundred thirteen".