2231158218 has 16 divisors (see below), whose sum is σ = 4476396960. Its totient is φ = 741372656.

The previous prime is 2231158199. The next prime is 2231158229. The reversal of 2231158218 is 8128511322.

2231158218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2231158218³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

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, 584628 + ... + 588431.

It is an arithmetic number, because the mean of its divisors is an integer number (279774810).

Almost surely, 2^2231158218 is an apocalyptic number.

2231158218 is an abundant number, since it is smaller than the sum of its proper divisors (2245238742).

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

2231158218 is a wasteful number, since it uses less digits than its factorization.

2231158218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173381.

The product of its digits is 7680, while the sum is 33.

The square root of 2231158218 is about 47235.1375355254. The cubic root of 2231158218 is about 1306.7027030733.

The spelling of 2231158218 in words is "two billion, two hundred thirty-one million, one hundred fifty-eight thousand, two hundred eighteen".