1128681776 has 20 divisors (see below), whose sum is σ = 2301917400. Its totient is φ = 534638592.

The previous prime is 1128681751. The next prime is 1128681779. The reversal of 1128681776 is 6771868211.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1128681776.

It is not an unprimeable number, because it can be changed into a prime (1128681779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1856081 + ... + 1856688.

It is an arithmetic number, because the mean of its divisors is an integer number (115095870).

Almost surely, 2^1128681776 is an apocalyptic number.

1128681776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1128681776 is an abundant number, since it is smaller than the sum of its proper divisors (1173235624).

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

1128681776 is a wasteful number, since it uses less digits than its factorization.

1128681776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712796 (or 3712790 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 1128681776 is about 33595.8595067904. The cubic root of 1128681776 is about 1041.1752542414.

The spelling of 1128681776 in words is "one billion, one hundred twenty-eight million, six hundred eighty-one thousand, seven hundred seventy-six".