1116721118 has 4 divisors (see below), whose sum is σ = 1675081680. Its totient is φ = 558360558.

The previous prime is 1116721069. The next prime is 1116721121. The reversal of 1116721118 is 8111276111.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279180278 + ... + 279180281.

It is an arithmetic number, because the mean of its divisors is an integer number (418770420).

Almost surely, 2^1116721118 is an apocalyptic number.

1116721118 is a deficient number, since it is larger than the sum of its proper divisors (558360562).

1116721118 is an equidigital number, since it uses as much as digits as its factorization.

1116721118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558360561.

The product of its digits is 672, while the sum is 29.

The square root of 1116721118 is about 33417.3774853743. The cubic root of 1116721118 is about 1037.4844026881.

Adding to 1116721118 its reverse (8111276111), we get a palindrome (9227997229).

The spelling of 1116721118 in words is "one billion, one hundred sixteen million, seven hundred twenty-one thousand, one hundred eighteen".