1118323555 has 8 divisors (see below), whose sum is σ = 1343426112. Its totient is φ = 893700288.

The previous prime is 1118323477. The next prime is 1118323567. The reversal of 1118323555 is 5553238111.

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

It is a cyclic number.

It is not a de Polignac number, because 1118323555 - 2²⁷ = 984105827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1118323555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114667 + ... + 124036.

It is an arithmetic number, because the mean of its divisors is an integer number (167928264).

Almost surely, 2^1118323555 is an apocalyptic number.

1118323555 is a deficient number, since it is larger than the sum of its proper divisors (225102557).

1118323555 is an equidigital number, since it uses as much as digits as its factorization.

1118323555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239645.

The product of its digits is 18000, while the sum is 34.

The square root of 1118323555 is about 33441.3449938844. The cubic root of 1118323555 is about 1037.9804109866.

The spelling of 1118323555 in words is "one billion, one hundred eighteen million, three hundred twenty-three thousand, five hundred fifty-five".