218828099 has 8 divisors (see below), whose sum is σ = 255410688. Its totient is φ = 183575880.

The previous prime is 218828083. The next prime is 218828107. The reversal of 218828099 is 990828812.

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

It is a cyclic number.

It is not a de Polignac number, because 218828099 - 2⁴ = 218828083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218828009) 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, 332237 + ... + 332894.

It is an arithmetic number, because the mean of its divisors is an integer number (31926336).

Almost surely, 2^218828099 is an apocalyptic number.

218828099 is a deficient number, since it is larger than the sum of its proper divisors (36582589).

218828099 is an equidigital number, since it uses as much as digits as its factorization.

218828099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665185.

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 218828099 is about 14792.8394502205. The cubic root of 218828099 is about 602.6072640645.

The spelling of 218828099 in words is "two hundred eighteen million, eight hundred twenty-eight thousand, ninety-nine".