1444220133 has 4 divisors (see below), whose sum is σ = 1925626848. Its totient is φ = 962813420.

The previous prime is 1444220131. The next prime is 1444220137. The reversal of 1444220133 is 3310224441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1444220133 - 2¹ = 1444220131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444220131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240703353 + ... + 240703358.

It is an arithmetic number, because the mean of its divisors is an integer number (481406712).

Almost surely, 2^1444220133 is an apocalyptic number.

It is an amenable number.

1444220133 is a deficient number, since it is larger than the sum of its proper divisors (481406715).

1444220133 is an equidigital number, since it uses as much as digits as its factorization.

1444220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481406714.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1444220133 is about 38002.8963764606. The cubic root of 1444220133 is about 1130.3452968829.

Adding to 1444220133 its reverse (3310224441), we get a palindrome (4754444574).

The spelling of 1444220133 in words is "one billion, four hundred forty-four million, two hundred twenty thousand, one hundred thirty-three".