1118383871 has 16 divisors (see below), whose sum is σ = 1301879040. Its totient is φ = 949993920.

The previous prime is 1118383859. The next prime is 1118383897. The reversal of 1118383871 is 1783838111.

It is a happy number.

It is not a de Polignac number, because 1118383871 - 2¹⁰ = 1118382847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118383841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21395 + ... + 51908.

It is an arithmetic number, because the mean of its divisors is an integer number (81367440).

Almost surely, 2^1118383871 is an apocalyptic number.

1118383871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1118383871 is a deficient number, since it is larger than the sum of its proper divisors (183495169).

1118383871 is a wasteful number, since it uses less digits than its factorization.

1118383871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73406.

The product of its digits is 32256, while the sum is 41.

The square root of 1118383871 is about 33442.2467995199. The cubic root of 1118383871 is about 1037.9990715673. Note that the first 3 decimals are identical.

The spelling of 1118383871 in words is "one billion, one hundred eighteen million, three hundred eighty-three thousand, eight hundred seventy-one".