1144221436 has 6 divisors (see below), whose sum is σ = 2002387520. Its totient is φ = 572110716.

The previous prime is 1144221413. The next prime is 1144221437. The reversal of 1144221436 is 6341224411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144221437) 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 as a sum of consecutive naturals, namely, 143027676 + ... + 143027683.

Almost surely, 2^1144221436 is an apocalyptic number.

It is an amenable number.

1144221436 is a deficient number, since it is larger than the sum of its proper divisors (858166084).

1144221436 is a wasteful number, since it uses less digits than its factorization.

1144221436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286055363 (or 286055361 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 1144221436 is about 33826.3423384793. The cubic root of 1144221436 is about 1045.9317821867.

Adding to 1144221436 its reverse (6341224411), we get a palindrome (7485445847).

The spelling of 1144221436 in words is "one billion, one hundred forty-four million, two hundred twenty-one thousand, four hundred thirty-six".