1223544116 has 6 divisors (see below), whose sum is σ = 2141202210. Its totient is φ = 611772056.

The previous prime is 1223544097. The next prime is 1223544149. The reversal of 1223544116 is 6114453221.

It can be written as a sum of positive squares in only one way, i.e., 899400100 + 324144016 = 29990^2 + 18004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152943011 + ... + 152943018.

It is an arithmetic number, because the mean of its divisors is an integer number (356867035).

Almost surely, 2^1223544116 is an apocalyptic number.

It is an amenable number.

1223544116 is a deficient number, since it is larger than the sum of its proper divisors (917658094).

1223544116 is a wasteful number, since it uses less digits than its factorization.

1223544116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305886033 (or 305886031 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 1223544116 is about 34979.1954738813. The cubic root of 1223544116 is about 1069.5634274526.

Adding to 1223544116 its reverse (6114453221), we get a palindrome (7337997337).

The spelling of 1223544116 in words is "one billion, two hundred twenty-three million, five hundred forty-four thousand, one hundred sixteen".