1123444668 has 24 divisors (see below), whose sum is σ = 2628409168. Its totient is φ = 373476096.

The previous prime is 1123444661. The next prime is 1123444691. The reversal of 1123444668 is 8664443211.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123444661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121021 + ... + 129972.

Almost surely, 2^1123444668 is an apocalyptic number.

It is an amenable number.

1123444668 is an abundant number, since it is smaller than the sum of its proper divisors (1504964500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123444668 is a wasteful number, since it uses less digits than its factorization.

1123444668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251373 (or 251371 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 1123444668 is about 33517.8261228260. The cubic root of 1123444668 is about 1039.5623984896.

Adding to 1123444668 its reverse (8664443211), we get a palindrome (9787887879).

The spelling of 1123444668 in words is "one billion, one hundred twenty-three million, four hundred forty-four thousand, six hundred sixty-eight".