2221642463 has 4 divisors (see below), whose sum is σ = 2259297480. Its totient is φ = 2183987448.

The previous prime is 2221642453. The next prime is 2221642487. The reversal of 2221642463 is 3642461222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221642463 - 2⁴ = 2221642447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221642403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18827420 + ... + 18827537.

It is an arithmetic number, because the mean of its divisors is an integer number (564824370).

Almost surely, 2^2221642463 is an apocalyptic number.

2221642463 is a deficient number, since it is larger than the sum of its proper divisors (37655017).

2221642463 is an equidigital number, since it uses as much as digits as its factorization.

2221642463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37655016.

The product of its digits is 27648, while the sum is 32.

The square root of 2221642463 is about 47134.3024028149. The cubic root of 2221642463 is about 1304.8423864882.

The spelling of 2221642463 in words is "two billion, two hundred twenty-one million, six hundred forty-two thousand, four hundred sixty-three".