2221946530 has 8 divisors (see below), whose sum is σ = 3999503772. Its totient is φ = 888778608.

The previous prime is 2221946521. The next prime is 2221946537. The reversal of 2221946530 is 356491222.

It can be written as a sum of positive squares in 2 ways, for example, as 2091507289 + 130439241 = 45733^2 + 11421^2 .

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 (2221946537) 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, 111097317 + ... + 111097336.

Almost surely, 2^2221946530 is an apocalyptic number.

2221946530 is a deficient number, since it is larger than the sum of its proper divisors (1777557242).

2221946530 is a wasteful number, since it uses less digits than its factorization.

2221946530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222194660.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2221946530 is about 47137.5278308059. The cubic root of 2221946530 is about 1304.9019132298.

The spelling of 2221946530 in words is "two billion, two hundred twenty-one million, nine hundred forty-six thousand, five hundred thirty".