8417442618 has 128 divisors (see below), whose sum is σ = 21746188800. Its totient is φ = 2391814656.

The previous prime is 8417442497. The next prime is 8417442629. The reversal of 8417442618 is 8162447148.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 459246 + ... + 477222.

It is an arithmetic number, because the mean of its divisors is an integer number (169892100).

Almost surely, 2^8417442618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8417442618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10873094400).

8417442618 is an abundant number, since it is smaller than the sum of its proper divisors (13328746182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8417442618 is a wasteful number, since it uses less digits than its factorization.

8417442618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18053 (or 18047 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 8417442618 is about 91746.6218342670. The cubic root of 8417442618 is about 2034.1987736581.

The spelling of 8417442618 in words is "eight billion, four hundred seventeen million, four hundred forty-two thousand, six hundred eighteen".