1123923249 has 16 divisors (see below), whose sum is σ = 1666194240. Its totient is φ = 748776960.

The previous prime is 1123923233. The next prime is 1123923263. The reversal of 1123923249 is 9423293211.

It is not a de Polignac number, because 1123923249 - 2⁴ = 1123923233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123923209) 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 in 15 ways as a sum of consecutive naturals, for example, 29169 + ... + 55665.

It is an arithmetic number, because the mean of its divisors is an integer number (104137140).

Almost surely, 2^1123923249 is an apocalyptic number.

It is an amenable number.

1123923249 is a deficient number, since it is larger than the sum of its proper divisors (542270991).

1123923249 is a wasteful number, since it uses less digits than its factorization.

1123923249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28077 (or 28071 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 1123923249 is about 33524.9645637397. The cubic root of 1123923249 is about 1039.7099934111.

The spelling of 1123923249 in words is "one billion, one hundred twenty-three million, nine hundred twenty-three thousand, two hundred forty-nine".