1113186128 has 20 divisors (see below), whose sum is σ = 2157380148. Its totient is φ = 556442880.

The previous prime is 1113186119. The next prime is 1113186157. The reversal of 1113186128 is 8216813111.

It can be written as a sum of positive squares in 2 ways, for example, as 744853264 + 368332864 = 27292^2 + 19192^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1113186094 and 1113186103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74450 + ... + 88142.

Almost surely, 2^1113186128 is an apocalyptic number.

It is an amenable number.

1113186128 is a deficient number, since it is larger than the sum of its proper divisors (1044194020).

1113186128 is a wasteful number, since it uses less digits than its factorization.

1113186128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18782 (or 18776 counting only the distinct ones).

The product of its digits is 2304, while the sum is 32.

The square root of 1113186128 is about 33364.4440684990. Note that the first 3 decimals coincide. The cubic root of 1113186128 is about 1036.3885236961.

Adding to 1113186128 its reverse (8216813111), we get a palindrome (9329999239).

The spelling of 1113186128 in words is "one billion, one hundred thirteen million, one hundred eighty-six thousand, one hundred twenty-eight".