1128774768 has 160 divisors (see below), whose sum is σ = 3299788800. Its totient is φ = 329521920.

The previous prime is 1128774763. The next prime is 1128774769. The reversal of 1128774768 is 8674778211.

It is a self number, because there is not a number n which added to its sum of digits gives 1128774768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128774763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884133 + ... + 1884731.

It is an arithmetic number, because the mean of its divisors is an integer number (20623680).

Almost surely, 2^1128774768 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 1128774768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649894400).

1128774768 is an abundant number, since it is smaller than the sum of its proper divisors (2171014032).

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

1128774768 is a wasteful number, since it uses less digits than its factorization.

1128774768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 741 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 51.

The square root of 1128774768 is about 33597.2434583553. The cubic root of 1128774768 is about 1041.2038475710.

The spelling of 1128774768 in words is "one billion, one hundred twenty-eight million, seven hundred seventy-four thousand, seven hundred sixty-eight".