2180000218 has 16 divisors (see below), whose sum is σ = 3600004320. Its totient is φ = 981817200.

The previous prime is 2180000203. The next prime is 2180000243. The reversal of 2180000218 is 8120000812.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 452148 + ... + 456943.

It is an arithmetic number, because the mean of its divisors is an integer number (225000270).

Almost surely, 2^2180000218 is an apocalyptic number.

2180000218 is a deficient number, since it is larger than the sum of its proper divisors (1420004102).

2180000218 is a wasteful number, since it uses less digits than its factorization.

2180000218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909213.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 2180000218 is about 46690.4724542385. The cubic root of 2180000218 is about 1296.6383001954.

It can be divided in two parts, 2180000 and 218, that multiplied together give a square (475240000 = 21800²).

The spelling of 2180000218 in words is "two billion, one hundred eighty million, two hundred eighteen", and thus it is an aban number.