1128865536 has 54 divisors (see below), whose sum is σ = 3254804280. Its totient is φ = 376287744.

The previous prime is 1128865489. The next prime is 1128865537. The reversal of 1128865536 is 6355688211.

1128865536 is a `hidden beast` number, since 1 + 12 + 8 + 86 + 553 + 6 = 666.

It is a super-3 number, since 3×1128865536³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1128865491 and 1128865500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128865537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242676 + ... + 247283.

Almost surely, 2^1128865536 is an apocalyptic number.

1128865536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1128865536 is an abundant number, since it is smaller than the sum of its proper divisors (2125938744).

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

1128865536 is an equidigital number, since it uses as much as digits as its factorization.

1128865536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489981 (or 489964 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 1128865536 is about 33598.5942563078. The cubic root of 1128865536 is about 1041.2317555471.

The spelling of 1128865536 in words is "one billion, one hundred twenty-eight million, eight hundred sixty-five thousand, five hundred thirty-six".