218163089 has 8 divisors (see below), whose sum is σ = 225391872. Its totient is φ = 210946320.

The previous prime is 218163083. The next prime is 218163107. The reversal of 218163089 is 980361812.

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

It is a de Polignac number, because none of the positive numbers 2^k-218163089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218163083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47822 + ... + 52184.

It is an arithmetic number, because the mean of its divisors is an integer number (28173984).

Almost surely, 2^218163089 is an apocalyptic number.

It is an amenable number.

218163089 is a deficient number, since it is larger than the sum of its proper divisors (7228783).

218163089 is a wasteful number, since it uses less digits than its factorization.

218163089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 218163089 is about 14770.3449181121. The cubic root of 218163089 is about 601.9962113866.

The spelling of 218163089 in words is "two hundred eighteen million, one hundred sixty-three thousand, eighty-nine".