1117653985 has 12 divisors (see below), whose sum is σ = 1560154068. Its totient is φ = 766391136.

The previous prime is 1117653961. The next prime is 1117653991. The reversal of 1117653985 is 5893567111.

It can be written as a sum of positive squares in 2 ways, for example, as 479434816 + 638219169 = 21896^2 + 25263^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1117653985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2280682 + ... + 2281171.

It is an arithmetic number, because the mean of its divisors is an integer number (130012839).

Almost surely, 2^1117653985 is an apocalyptic number.

It is an amenable number.

1117653985 is a deficient number, since it is larger than the sum of its proper divisors (442500083).

1117653985 is an equidigital number, since it uses as much as digits as its factorization.

1117653985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561872 (or 4561865 counting only the distinct ones).

The product of its digits is 226800, while the sum is 46.

The square root of 1117653985 is about 33431.3323844564. The cubic root of 1117653985 is about 1037.7732141540.

The spelling of 1117653985 in words is "one billion, one hundred seventeen million, six hundred fifty-three thousand, nine hundred eighty-five".