8718564492 has 144 divisors (see below), whose sum is σ = 24906856800. Its totient is φ = 2635459200.

The previous prime is 8718564487. The next prime is 8718564497. The reversal of 8718564492 is 2944658178.

It is a happy number.

8718564492 is a `hidden beast` number, since 8 + 71 + 8 + 564 + 4 + 9 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (8718564487) and next prime (8718564497).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8718564497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9264742 + ... + 9265682.

Almost surely, 2^8718564492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8718564492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12453428400).

8718564492 is an abundant number, since it is smaller than the sum of its proper divisors (16188292308).

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

8718564492 is a wasteful number, since it uses less digits than its factorization.

8718564492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1666 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 8718564492 is about 93373.2536222231. The cubic root of 8718564492 is about 2058.1719802899.

The spelling of 8718564492 in words is "eight billion, seven hundred eighteen million, five hundred sixty-four thousand, four hundred ninety-two".