2221643489 has 8 divisors (see below), whose sum is σ = 2469718272. Its totient is φ = 1984594320.

The previous prime is 2221643471. The next prime is 2221643509. The reversal of 2221643489 is 9843461222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221643489 - 2⁸ = 2221643233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2221640489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755979 + ... + 2756784.

It is an arithmetic number, because the mean of its divisors is an integer number (308714784).

Almost surely, 2^2221643489 is an apocalyptic number.

It is an amenable number.

2221643489 is a deficient number, since it is larger than the sum of its proper divisors (248074783).

2221643489 is a wasteful number, since it uses less digits than its factorization.

2221643489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512807.

The product of its digits is 165888, while the sum is 41.

The square root of 2221643489 is about 47134.3132866068. The cubic root of 2221643489 is about 1304.8425873559.

The spelling of 2221643489 in words is "two billion, two hundred twenty-one million, six hundred forty-three thousand, four hundred eighty-nine".