3822218 has 4 divisors (see below), whose sum is σ = 5733330. Its totient is φ = 1911108.

The previous prime is 3822191. The next prime is 3822223. The reversal of 3822218 is 8122283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8122283 = 13 ⋅624791.

It can be written as a sum of positive squares in only one way, i.e., 3193369 + 628849 = 1787^2 + 793^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 955553 + ... + 955556.

Almost surely, 2^3822218 is an apocalyptic number.

3822218 is a deficient number, since it is larger than the sum of its proper divisors (1911112).

3822218 is a wasteful number, since it uses less digits than its factorization.

3822218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911111.

The product of its digits is 1536, while the sum is 26.

The square root of 3822218 is about 1955.0493599907. The cubic root of 3822218 is about 156.3526156867.

The spelling of 3822218 in words is "three million, eight hundred twenty-two thousand, two hundred eighteen".