1224134644 has 12 divisors (see below), whose sum is σ = 2145852324. Its totient is φ = 611033984.

The previous prime is 1224134633. The next prime is 1224134647. The reversal of 1224134644 is 4464314221.

It can be written as a sum of positive squares in 2 ways, for example, as 662444644 + 561690000 = 25738^2 + 23700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224134647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255667 + ... + 260410.

It is an arithmetic number, because the mean of its divisors is an integer number (178821027).

Almost surely, 2^1224134644 is an apocalyptic number.

It is an amenable number.

1224134644 is a deficient number, since it is larger than the sum of its proper divisors (921717680).

1224134644 is a wasteful number, since it uses less digits than its factorization.

1224134644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516674 (or 516672 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 1224134644 is about 34987.6355874472. The cubic root of 1224134644 is about 1069.7354701707.

Adding to 1224134644 its reverse (4464314221), we get a palindrome (5688448865).

The spelling of 1224134644 in words is "one billion, two hundred twenty-four million, one hundred thirty-four thousand, six hundred forty-four".