1440221133 has 8 divisors (see below), whose sum is σ = 2068009888. Its totient is φ = 886289904.

The previous prime is 1440221129. The next prime is 1440221137. The reversal of 1440221133 is 3311220441.

It is an interprime number because it is at equal distance from previous prime (1440221129) and next prime (1440221137).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440221133 - 2² = 1440221129 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 (1440221137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18464335 + ... + 18464412.

It is an arithmetic number, because the mean of its divisors is an integer number (258501236).

Almost surely, 2^1440221133 is an apocalyptic number.

1440221133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1440221133 is a deficient number, since it is larger than the sum of its proper divisors (627788755).

1440221133 is a wasteful number, since it uses less digits than its factorization.

1440221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36928763.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1440221133 is about 37950.2454932771. The cubic root of 1440221133 is about 1129.3010356209.

Adding to 1440221133 its reverse (3311220441), we get a palindrome (4751441574).

The spelling of 1440221133 in words is "one billion, four hundred forty million, two hundred twenty-one thousand, one hundred thirty-three".