1128128166 has 24 divisors (see below), whose sum is σ = 2666485224. Its totient is φ = 341856960.

The previous prime is 1128128147. The next prime is 1128128167. The reversal of 1128128166 is 6618218211.

It is a self number, because there is not a number n which added to its sum of digits gives 1128128166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128128167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2848611 + ... + 2849006.

It is an arithmetic number, because the mean of its divisors is an integer number (111103551).

Almost surely, 2^1128128166 is an apocalyptic number.

1128128166 is an abundant number, since it is smaller than the sum of its proper divisors (1538357058).

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

1128128166 is a wasteful number, since it uses less digits than its factorization.

1128128166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697636 (or 5697633 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 1128128166 is about 33587.6192368557. The cubic root of 1128128166 is about 1041.0049968339.

The spelling of 1128128166 in words is "one billion, one hundred twenty-eight million, one hundred twenty-eight thousand, one hundred sixty-six".