2219780242 has 8 divisors (see below), whose sum is σ = 3338058636. Its totient is φ = 1107094032.

The previous prime is 2219780207. The next prime is 2219780243. The reversal of 2219780242 is 2420879122.

It can be written as a sum of positive squares in 2 ways, for example, as 2186591121 + 33189121 = 46761^2 + 5761^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2219780243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397053 + ... + 1398640.

Almost surely, 2^2219780242 is an apocalyptic number.

2219780242 is a deficient number, since it is larger than the sum of its proper divisors (1118278394).

2219780242 is a wasteful number, since it uses less digits than its factorization.

2219780242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796092.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2219780242 is about 47114.5438479457. The cubic root of 2219780242 is about 1304.4777037245.

The spelling of 2219780242 in words is "two billion, two hundred nineteen million, seven hundred eighty thousand, two hundred forty-two".