2220219978 has 8 divisors (see below), whose sum is σ = 4440439968. Its totient is φ = 740073324.

The previous prime is 2220219943. The next prime is 2220220021. The reversal of 2220219978 is 8799120222.

It is a sphenic number, since it is the product of 3 distinct primes.

2220219978 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185018326 + ... + 185018337.

It is an arithmetic number, because the mean of its divisors is an integer number (555054996).

Almost surely, 2^2220219978 is an apocalyptic number.

2220219978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2220219978 is a wasteful number, since it uses less digits than its factorization.

2220219978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370036668.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2220219978 is about 47119.2102862516. The cubic root of 2220219978 is about 1304.5638365651.

The spelling of 2220219978 in words is "two billion, two hundred twenty million, two hundred nineteen thousand, nine hundred seventy-eight".