8618442663 has 16 divisors (see below), whose sum is σ = 11547003776. Its totient is φ = 5717809440.

The previous prime is 8618442659. The next prime is 8618442667. The reversal of 8618442663 is 3662448168.

It is an interprime number because it is at equal distance from previous prime (8618442659) and next prime (8618442667).

It is not a de Polignac number, because 8618442663 - 2² = 8618442659 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 (8618442667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682281 + ... + 694797.

It is an arithmetic number, because the mean of its divisors is an integer number (721687736).

Almost surely, 2^8618442663 is an apocalyptic number.

8618442663 is a deficient number, since it is larger than the sum of its proper divisors (2928561113).

8618442663 is a wasteful number, since it uses less digits than its factorization.

8618442663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13614.

The product of its digits is 1327104, while the sum is 48.

The square root of 8618442663 is about 92835.5678767572. The cubic root of 8618442663 is about 2050.2631161782.

The spelling of 8618442663 in words is "eight billion, six hundred eighteen million, four hundred forty-two thousand, six hundred sixty-three".