1117842985 has 8 divisors (see below), whose sum is σ = 1533041856. Its totient is φ = 766520880.

The previous prime is 1117842959. The next prime is 1117843003. The reversal of 1117842985 is 5892487111.

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

It is not a de Polignac number, because 1117842985 - 2⁵ = 1117842953 is a prime.

It is a super-2 number, since 2×1117842985² = 2499145878227420450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15969151 + ... + 15969220.

It is an arithmetic number, because the mean of its divisors is an integer number (191630232).

Almost surely, 2^1117842985 is an apocalyptic number.

It is an amenable number.

1117842985 is a deficient number, since it is larger than the sum of its proper divisors (415198871).

1117842985 is an equidigital number, since it uses as much as digits as its factorization.

1117842985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31938383.

The product of its digits is 161280, while the sum is 46.

The square root of 1117842985 is about 33434.1589545782. The cubic root of 1117842985 is about 1037.8317081320.

The spelling of 1117842985 in words is "one billion, one hundred seventeen million, eight hundred forty-two thousand, nine hundred eighty-five".