1440001133 has 4 divisors (see below), whose sum is σ = 1524707100. Its totient is φ = 1355295168.

The previous prime is 1440001117. The next prime is 1440001153. The reversal of 1440001133 is 3311000441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1140953284 + 299047849 = 33778^2 + 17293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440001133 - 2⁴ = 1440001117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 84705949 = 1440001133 / (1 + 4 + 4 + 0 + 0 + 0 + 1 + 1 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440001153) 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 3 ways as a sum of consecutive naturals, for example, 42352958 + ... + 42352991.

It is an arithmetic number, because the mean of its divisors is an integer number (381176775).

Almost surely, 2^1440001133 is an apocalyptic number.

It is an amenable number.

1440001133 is a deficient number, since it is larger than the sum of its proper divisors (84705967).

1440001133 is an equidigital number, since it uses as much as digits as its factorization.

1440001133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84705966.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1440001133 is about 37947.3468506034. The cubic root of 1440001133 is about 1129.2435308221.

Adding to 1440001133 its reverse (3311000441), we get a palindrome (4751001574).

The spelling of 1440001133 in words is "one billion, four hundred forty million, one thousand, one hundred thirty-three".