1128198553 has 8 divisors (see below), whose sum is σ = 1180415808. Its totient is φ = 1076245104.

The previous prime is 1128198541. The next prime is 1128198569. The reversal of 1128198553 is 3558918211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1128198553 - 2¹³ = 1128190361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128198503) 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, 57175 + ... + 74332.

It is an arithmetic number, because the mean of its divisors is an integer number (147551976).

Almost surely, 2^1128198553 is an apocalyptic number.

It is an amenable number.

1128198553 is a deficient number, since it is larger than the sum of its proper divisors (52217255).

1128198553 is a wasteful number, since it uses less digits than its factorization.

1128198553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131903.

The product of its digits is 86400, while the sum is 43.

The square root of 1128198553 is about 33588.6670322000. The cubic root of 1128198553 is about 1041.0266467661.

The spelling of 1128198553 in words is "one billion, one hundred twenty-eight million, one hundred ninety-eight thousand, five hundred fifty-three".