1128117478 has 16 divisors (see below), whose sum is σ = 1782259200. Its totient is φ = 534489736.

The previous prime is 1128117451. The next prime is 1128117479. The reversal of 1128117478 is 8747118211.

It is a self number, because there is not a number n which added to its sum of digits gives 1128117478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128117479) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 109678 + ... + 119521.

It is an arithmetic number, because the mean of its divisors is an integer number (111391200).

Almost surely, 2^1128117478 is an apocalyptic number.

1128117478 is a deficient number, since it is larger than the sum of its proper divisors (654141722).

1128117478 is a wasteful number, since it uses less digits than its factorization.

1128117478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229331.

The product of its digits is 25088, while the sum is 40.

The square root of 1128117478 is about 33587.4601302331. The cubic root of 1128117478 is about 1041.0017092948.

The spelling of 1128117478 in words is "one billion, one hundred twenty-eight million, one hundred seventeen thousand, four hundred seventy-eight".