8442718823 has 32 divisors (see below), whose sum is σ = 11213821440. Its totient is φ = 6153615360.

The previous prime is 8442718819. The next prime is 8442718841. The reversal of 8442718823 is 3288172448.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8442718823 - 2² = 8442718819 is a prime.

It is a super-2 number, since 2×8442718823² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442712823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193583 + ... + 233151.

It is an arithmetic number, because the mean of its divisors is an integer number (350431920).

Almost surely, 2^8442718823 is an apocalyptic number.

8442718823 is a deficient number, since it is larger than the sum of its proper divisors (2771102617).

8442718823 is a wasteful number, since it uses less digits than its factorization.

8442718823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39767.

The product of its digits is 688128, while the sum is 47.

The square root of 8442718823 is about 91884.2686372374. The cubic root of 8442718823 is about 2036.2328611986.

The spelling of 8442718823 in words is "eight billion, four hundred forty-two million, seven hundred eighteen thousand, eight hundred twenty-three".