1118285917 has 8 divisors (see below), whose sum is σ = 1286506112. Its totient is φ = 952182000.

The previous prime is 1118285893. The next prime is 1118285939. The reversal of 1118285917 is 7195828111.

It is a happy number.

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

It is not a de Polignac number, because 1118285917 - 2¹¹ = 1118283869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118285957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527934 + ... + 530047.

It is an arithmetic number, because the mean of its divisors is an integer number (160813264).

Almost surely, 2^1118285917 is an apocalyptic number.

It is an amenable number.

1118285917 is a deficient number, since it is larger than the sum of its proper divisors (168220195).

1118285917 is a wasteful number, since it uses less digits than its factorization.

1118285917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058139.

The product of its digits is 40320, while the sum is 43.

The square root of 1118285917 is about 33440.7822426450. The cubic root of 1118285917 is about 1037.9687661918.

The spelling of 1118285917 in words is "one billion, one hundred eighteen million, two hundred eighty-five thousand, nine hundred seventeen".