1128048138 has 48 divisors (see below), whose sum is σ = 2796158976. Its totient is φ = 321965280.

The previous prime is 1128048127. The next prime is 1128048139. The reversal of 1128048138 is 8318408211.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1128048139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133623 + ... + 141813.

It is an arithmetic number, because the mean of its divisors is an integer number (58253312).

Almost surely, 2^1128048138 is an apocalyptic number.

1128048138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1128048138 is an abundant number, since it is smaller than the sum of its proper divisors (1668110838).

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

1128048138 is a wasteful number, since it uses less digits than its factorization.

1128048138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299 (or 9296 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 1128048138 is about 33586.4278838938. The cubic root of 1128048138 is about 1040.9803803880.

The spelling of 1128048138 in words is "one billion, one hundred twenty-eight million, forty-eight thousand, one hundred thirty-eight".