8218619244 has 36 divisors (see below), whose sum is σ = 22663466280. Its totient is φ = 2490490560.

The previous prime is 8218619239. The next prime is 8218619249. The reversal of 8218619244 is 4429168128.

8218619244 is a `hidden beast` number, since 8 + 2 + 1 + 8 + 619 + 24 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (8218619239) and next prime (8218619249).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8218619244.

It is not an unprimeable number, because it can be changed into a prime (8218619249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10376649 + ... + 10377440.

It is an arithmetic number, because the mean of its divisors is an integer number (629540730).

Almost surely, 2^8218619244 is an apocalyptic number.

It is an amenable number.

8218619244 is an abundant number, since it is smaller than the sum of its proper divisors (14444847036).

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

8218619244 is a wasteful number, since it uses less digits than its factorization.

8218619244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20754110 (or 20754105 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 8218619244 is about 90656.6006642649. The cubic root of 8218619244 is about 2018.0547921224.

The spelling of 8218619244 in words is "eight billion, two hundred eighteen million, six hundred nineteen thousand, two hundred forty-four".