1128504681 has 6 divisors (see below), whose sum is σ = 1630062330. Its totient is φ = 752336448.

The previous prime is 1128504661. The next prime is 1128504709. The reversal of 1128504681 is 1864058211.

1128504681 is a `hidden beast` number, since 112 + 85 + 0 + 468 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1119504681 + 9000000 = 33459^2 + 3000^2 .

It is not a de Polignac number, because 1128504681 - 2¹⁰ = 1128503657 is a prime.

It is a super-2 number, since 2×1128504681² = 2547045630077823522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1128504661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62694696 + ... + 62694713.

It is an arithmetic number, because the mean of its divisors is an integer number (271677055).

Almost surely, 2^1128504681 is an apocalyptic number.

It is an amenable number.

1128504681 is a deficient number, since it is larger than the sum of its proper divisors (501557649).

1128504681 is a wasteful number, since it uses less digits than its factorization.

1128504681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125389415 (or 125389412 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1128504681 is about 33593.2237363430. The cubic root of 1128504681 is about 1041.1207964423.

The spelling of 1128504681 in words is "one billion, one hundred twenty-eight million, five hundred four thousand, six hundred eighty-one".