2223219978 has 48 divisors (see below), whose sum is σ = 5521089600. Its totient is φ = 633362688.

The previous prime is 2223219949. The next prime is 2223220019. The reversal of 2223219978 is 8799123222.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18298 + ... + 69146.

It is an arithmetic number, because the mean of its divisors is an integer number (115022700).

Almost surely, 2^2223219978 is an apocalyptic number.

2223219978 is an abundant number, since it is smaller than the sum of its proper divisors (3297869622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2223219978 is a wasteful number, since it uses less digits than its factorization.

2223219978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51211 (or 51208 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2223219978 is about 47151.0336896234. The cubic root of 2223219978 is about 1305.1511552575.

The spelling of 2223219978 in words is "two billion, two hundred twenty-three million, two hundred nineteen thousand, nine hundred seventy-eight".