1128398554 has 16 divisors (see below), whose sum is σ = 1715414400. Its totient is φ = 556605504.

The previous prime is 1128398549. The next prime is 1128398569. The reversal of 1128398554 is 4558938211.

It is an unprimeable number.

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, 278757 + ... + 282775.

It is an arithmetic number, because the mean of its divisors is an integer number (107213400).

Almost surely, 2^1128398554 is an apocalyptic number.

1128398554 is a deficient number, since it is larger than the sum of its proper divisors (587015846).

1128398554 is a wasteful number, since it uses less digits than its factorization.

1128398554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877.

The product of its digits is 345600, while the sum is 46.

The square root of 1128398554 is about 33591.6441098080. The cubic root of 1128398554 is about 1041.0881590085.

The spelling of 1128398554 in words is "one billion, one hundred twenty-eight million, three hundred ninety-eight thousand, five hundred fifty-four".