2206018 has 4 divisors (see below), whose sum is σ = 3309030. Its totient is φ = 1103008.

The previous prime is 2205989. The next prime is 2206021. The reversal of 2206018 is 8106022.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1545049 + 660969 = 1243^2 + 813^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2205986 and 2206004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551503 + ... + 551506.

2^2206018 is an apocalyptic number.

2206018 is a deficient number, since it is larger than the sum of its proper divisors (1103012).

2206018 is a wasteful number, since it uses less digits than its factorization.

2206018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103011.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2206018 is about 1485.2669793677. The cubic root of 2206018 is about 130.1776270092.

The spelling of 2206018 in words is "two million, two hundred six thousand, eighteen".