2218000385 has 8 divisors (see below), whose sum is σ = 2661935616. Its totient is φ = 1774176880.

The previous prime is 2218000349. The next prime is 2218000403. The reversal of 2218000385 is 5830008122.

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

It is not a de Polignac number, because 2218000385 - 2¹⁸ = 2217738241 is a prime.

It is a Duffinian number.

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, 24800 + ... + 71070.

It is an arithmetic number, because the mean of its divisors is an integer number (332741952).

It is a Proth number, since it is equal to 8461 ⋅ 2¹⁸ + 1 and 8461 < 2¹⁸.

Almost surely, 2^2218000385 is an apocalyptic number.

It is an amenable number.

2218000385 is a deficient number, since it is larger than the sum of its proper divisors (443935231).

2218000385 is an equidigital number, since it uses as much as digits as its factorization.

2218000385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55863.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2218000385 is about 47095.6514446929. The cubic root of 2218000385 is about 1304.1289598033.

The spelling of 2218000385 in words is "two billion, two hundred eighteen million, three hundred eighty-five", and thus it is an aban number.