216008818 has 8 divisors (see below), whose sum is σ = 327041712. Its totient is φ = 106994916.

The previous prime is 216008809. The next prime is 216008827. The reversal of 216008818 is 818800612.

It is an interprime number because it is at equal distance from previous prime (216008809) and next prime (216008827).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504480 + ... + 504907.

It is an arithmetic number, because the mean of its divisors is an integer number (40880214).

Almost surely, 2^216008818 is an apocalyptic number.

216008818 is a deficient number, since it is larger than the sum of its proper divisors (111032894).

216008818 is a wasteful number, since it uses less digits than its factorization.

216008818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009496.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 216008818 is about 14697.2384480895. The cubic root of 216008818 is about 600.0081647037.

The spelling of 216008818 in words is "two hundred sixteen million, eight thousand, eight hundred eighteen".