1123983988 has 24 divisors (see below), whose sum is σ = 2137291520. Its totient is φ = 515237760.

The previous prime is 1123983979. The next prime is 1123983989. The reversal of 1123983988 is 8893893211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123983989) 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, 236181 + ... + 240892.

Almost surely, 2^1123983988 is an apocalyptic number.

It is an amenable number.

1123983988 is a deficient number, since it is larger than the sum of its proper divisors (1013307532).

1123983988 is a wasteful number, since it uses less digits than its factorization.

1123983988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477127 (or 477125 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 1123983988 is about 33525.8704286705. The cubic root of 1123983988 is about 1039.7287223910.

The spelling of 1123983988 in words is "one billion, one hundred twenty-three million, nine hundred eighty-three thousand, nine hundred eighty-eight".