1123759788 has 72 divisors (see below), whose sum is σ = 2787548400. Its totient is φ = 352287360.

The previous prime is 1123759757. The next prime is 1123759799. The reversal of 1123759788 is 8879573211.

It is a super-2 number, since 2×1123759788² = 2525672122251609888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123759788.

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 23 ways as a sum of consecutive naturals, for example, 644598 + ... + 646338.

It is an arithmetic number, because the mean of its divisors is an integer number (38715950).

Almost surely, 2^1123759788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123759788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393774200).

1123759788 is an abundant number, since it is smaller than the sum of its proper divisors (1663788612).

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

1123759788 is a wasteful number, since it uses less digits than its factorization.

1123759788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935 (or 1914 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The square root of 1123759788 is about 33522.5265754239. The cubic root of 1123759788 is about 1039.6595865661.

The spelling of 1123759788 in words is "one billion, one hundred twenty-three million, seven hundred fifty-nine thousand, seven hundred eighty-eight".