1118273816 has 32 divisors (see below), whose sum is σ = 2289304080. Its totient is φ = 507878400.

The previous prime is 1118273809. The next prime is 1118273833. The reversal of 1118273816 is 6183728111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1118273816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115100 + ... + 124436.

Almost surely, 2^1118273816 is an apocalyptic number.

It is an amenable number.

1118273816 is an abundant number, since it is smaller than the sum of its proper divisors (1171030264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1118273816 is a wasteful number, since it uses less digits than its factorization.

1118273816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715 (or 10711 counting only the distinct ones).

The product of its digits is 16128, while the sum is 38.

The square root of 1118273816 is about 33440.6013103832. The cubic root of 1118273816 is about 1037.9650222162.

The spelling of 1118273816 in words is "one billion, one hundred eighteen million, two hundred seventy-three thousand, eight hundred sixteen".