1118987118 has 12 divisors (see below), whose sum is σ = 2424472128. Its totient is φ = 372995700.

The previous prime is 1118987101. The next prime is 1118987119. The reversal of 1118987118 is 8117898111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118987119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31082958 + ... + 31082993.

It is an arithmetic number, because the mean of its divisors is an integer number (202039344).

Almost surely, 2^1118987118 is an apocalyptic number.

1118987118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1118987118 is an abundant number, since it is smaller than the sum of its proper divisors (1305485010).

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

1118987118 is a wasteful number, since it uses less digits than its factorization.

1118987118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62165959 (or 62165956 counting only the distinct ones).

The product of its digits is 32256, while the sum is 45.

The square root of 1118987118 is about 33451.2648191365. The cubic root of 1118987118 is about 1038.1856673902.

The spelling of 1118987118 in words is "one billion, one hundred eighteen million, nine hundred eighty-seven thousand, one hundred eighteen".