8218861424 has 40 divisors (see below), whose sum is σ = 16538584320. Its totient is φ = 3953805248.

The previous prime is 8218861367. The next prime is 8218861457. The reversal of 8218861424 is 4241688128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48254 + ... + 136989.

It is an arithmetic number, because the mean of its divisors is an integer number (413464608).

Almost surely, 2^8218861424 is an apocalyptic number.

It is an amenable number.

8218861424 is an abundant number, since it is smaller than the sum of its proper divisors (8319722896).

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

8218861424 is a wasteful number, since it uses less digits than its factorization.

8218861424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185357 (or 185351 counting only the distinct ones).

The product of its digits is 196608, while the sum is 44.

The square root of 8218861424 is about 90657.9363541880. The cubic root of 8218861424 is about 2018.0746140939.

The spelling of 8218861424 in words is "eight billion, two hundred eighteen million, eight hundred sixty-one thousand, four hundred twenty-four".