1113128085 has 8 divisors (see below), whose sum is σ = 1781004960. Its totient is φ = 593668304.

The previous prime is 1113128077. The next prime is 1113128111. The reversal of 1113128085 is 5808213111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1113128085 - 2³ = 1113128077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37104255 + ... + 37104284.

It is an arithmetic number, because the mean of its divisors is an integer number (222625620).

Almost surely, 2^1113128085 is an apocalyptic number.

1113128085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1113128085 is a deficient number, since it is larger than the sum of its proper divisors (667876875).

1113128085 is an equidigital number, since it uses as much as digits as its factorization.

1113128085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74208547.

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 1113128085 is about 33363.5742239946. The cubic root of 1113128085 is about 1036.3705104926.

The spelling of 1113128085 in words is "one billion, one hundred thirteen million, one hundred twenty-eight thousand, eighty-five".