2218398206 has 4 divisors (see below), whose sum is σ = 3327597312. Its totient is φ = 1109199102.

The previous prime is 2218398179. The next prime is 2218398209. The reversal of 2218398206 is 6028938122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218398209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554599550 + ... + 554599553.

It is an arithmetic number, because the mean of its divisors is an integer number (831899328).

Almost surely, 2^2218398206 is an apocalyptic number.

2218398206 is a deficient number, since it is larger than the sum of its proper divisors (1109199106).

2218398206 is a wasteful number, since it uses less digits than its factorization.

2218398206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109199105.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2218398206 is about 47099.8747981351. The cubic root of 2218398206 is about 1304.2069247540.

The spelling of 2218398206 in words is "two billion, two hundred eighteen million, three hundred ninety-eight thousand, two hundred six".