1128455118 has 256 divisors, whose sum is σ = 3185049600. Its totient is φ = 289111680.

The previous prime is 1128455117. The next prime is 1128455137. The reversal of 1128455118 is 8115548211.

1128455118 is a `hidden beast` number, since 1 + 12 + 84 + 551 + 18 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128455117) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14284203 + ... + 14284281.

It is an arithmetic number, because the mean of its divisors is an integer number (12441600).

Almost surely, 2^1128455118 is an apocalyptic number.

1128455118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128455118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592524800).

1128455118 is an abundant number, since it is smaller than the sum of its proper divisors (2056594482).

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

1128455118 is a wasteful number, since it uses less digits than its factorization.

1128455118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 198 counting only the distinct ones).

The product of its digits is 12800, while the sum is 36.

The square root of 1128455118 is about 33592.4860348263. The cubic root of 1128455118 is about 1041.1055544953.

The spelling of 1128455118 in words is "one billion, one hundred twenty-eight million, four hundred fifty-five thousand, one hundred eighteen".