1123749888 has 104 divisors (see below), whose sum is σ = 3027393600. Its totient is φ = 370704384.

The previous prime is 1123749883. The next prime is 1123749901. The reversal of 1123749888 is 8889473211.

It is a self number, because there is not a number n which added to its sum of digits gives 1123749888.

It is not an unprimeable number, because it can be changed into a prime (1123749883) 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, 1338973 + ... + 1339811.

Almost surely, 2^1123749888 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 1123749888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513696800).

1123749888 is an abundant number, since it is smaller than the sum of its proper divisors (1903643712).

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

1123749888 is an equidigital number, since it uses as much as digits as its factorization.

1123749888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 953 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 1123749888 is about 33522.3789131977. The cubic root of 1123749888 is about 1039.6565335233.

The spelling of 1123749888 in words is "one billion, one hundred twenty-three million, seven hundred forty-nine thousand, eight hundred eighty-eight".