1223816044 has 12 divisors (see below), whose sum is σ = 2336376168. Its totient is φ = 556280000.

The previous prime is 1223816029. The next prime is 1223816051. The reversal of 1223816044 is 4406183221.

It is a junction number, because it is equal to n+sod(n) for n = 1223815997 and 1223816015.

It is an unprimeable number.

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, 13906957 + ... + 13907044.

It is an arithmetic number, because the mean of its divisors is an integer number (194698014).

Almost surely, 2^1223816044 is an apocalyptic number.

It is an amenable number.

1223816044 is a deficient number, since it is larger than the sum of its proper divisors (1112560124).

1223816044 is a wasteful number, since it uses less digits than its factorization.

1223816044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27814016 (or 27814014 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1223816044 is about 34983.0822541411. The cubic root of 1223816044 is about 1069.6426570437.

Adding to 1223816044 its reverse (4406183221), we get a palindrome (5629999265).

It can be divided in two parts, 12238 and 16044, that added together give a palindrome (28282).

The spelling of 1223816044 in words is "one billion, two hundred twenty-three million, eight hundred sixteen thousand, forty-four".