8179808868 has 192 divisors, whose sum is σ = 26493143040. Its totient is φ = 2120342400.

The previous prime is 8179808867. The next prime is 8179808869. The reversal of 8179808868 is 8688089718.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8179808867) and next prime (8179808869).

It is a super-2 number, since 2×8179808868² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (8179808867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8074330 + ... + 8075342.

It is an arithmetic number, because the mean of its divisors is an integer number (137985120).

Almost surely, 2^8179808868 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 8179808868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13246571520).

8179808868 is an abundant number, since it is smaller than the sum of its proper divisors (18313334172).

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

8179808868 is a wasteful number, since it uses less digits than its factorization.

8179808868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2007 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 63.

The square root of 8179808868 is about 90442.2957912945. The cubic root of 8179808868 is about 2014.8731922325.

The spelling of 8179808868 in words is "eight billion, one hundred seventy-nine million, eight hundred eight thousand, eight hundred sixty-eight".