1128818340 has 72 divisors (see below), whose sum is σ = 3687480888. Its totient is φ = 277862400.

The previous prime is 1128818333. The next prime is 1128818363. The reversal of 1128818340 is 438188211.

It can be written as a sum of positive squares in 4 ways, for example, as 4691556 + 1124126784 = 2166^2 + 33528^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1128818295 and 1128818304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238861 + ... + 243540.

Almost surely, 2^1128818340 is an apocalyptic number.

1128818340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128818340 is an abundant number, since it is smaller than the sum of its proper divisors (2558662548).

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

1128818340 is a wasteful number, since it uses less digits than its factorization.

1128818340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482429 (or 482424 counting only the distinct ones).

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

The square root of 1128818340 is about 33597.8918981534. The cubic root of 1128818340 is about 1041.2172446194.

The spelling of 1128818340 in words is "one billion, one hundred twenty-eight million, eight hundred eighteen thousand, three hundred forty".