8218949222 has 24 divisors (see below), whose sum is σ = 13769303400. Its totient is φ = 3648986880.

The previous prime is 8218949213. The next prime is 8218949261. The reversal of 8218949222 is 2229498128.

It is a super-2 number, since 2×8218949222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60347 + ... + 141702.

It is an arithmetic number, because the mean of its divisors is an integer number (573720975).

Almost surely, 2^8218949222 is an apocalyptic number.

8218949222 is a deficient number, since it is larger than the sum of its proper divisors (5550354178).

8218949222 is a wasteful number, since it uses less digits than its factorization.

8218949222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202148 (or 202105 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 8218949222 is about 90658.4205796682. The cubic root of 8218949222 is about 2018.0818000967.

The spelling of 8218949222 in words is "eight billion, two hundred eighteen million, nine hundred forty-nine thousand, two hundred twenty-two".