1118143215 has 48 divisors (see below), whose sum is σ = 2241727488. Its totient is φ = 504980928.

The previous prime is 1118143189. The next prime is 1118143231. The reversal of 1118143215 is 5123418111.

It is not a de Polignac number, because 1118143215 - 2⁹ = 1118142703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4762 + ... + 47528.

It is an arithmetic number, because the mean of its divisors is an integer number (46702656).

Almost surely, 2^1118143215 is an apocalyptic number.

1118143215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1118143215 is an abundant number, since it is smaller than the sum of its proper divisors (1123584273).

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

1118143215 is a wasteful number, since it uses less digits than its factorization.

1118143215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42868 (or 42865 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 1118143215 is about 33438.6485223312. The cubic root of 1118143215 is about 1037.9246133451.

The spelling of 1118143215 in words is "one billion, one hundred eighteen million, one hundred forty-three thousand, two hundred fifteen".