1016644223 has 4 divisors (see below), whose sum is σ = 1161879120. Its totient is φ = 871409328.

The previous prime is 1016644219. The next prime is 1016644247. The reversal of 1016644223 is 3224466101.

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 1016644223 - 2² = 1016644219 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 (1016644253) 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, 72617438 + ... + 72617451.

It is an arithmetic number, because the mean of its divisors is an integer number (290469780).

Almost surely, 2^1016644223 is an apocalyptic number.

1016644223 is a deficient number, since it is larger than the sum of its proper divisors (145234897).

1016644223 is an equidigital number, since it uses as much as digits as its factorization.

1016644223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145234896.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1016644223 is about 31884.8588361310. The cubic root of 1016644223 is about 1005.5175747110.

The spelling of 1016644223 in words is "one billion, sixteen million, six hundred forty-four thousand, two hundred twenty-three".