8108686469 has 8 divisors (see below), whose sum is σ = 9246104280. Its totient is φ = 7044650496.

The previous prime is 8108686451. The next prime is 8108686489. The reversal of 8108686469 is 9646868018.

It can be written as a sum of positive squares in 4 ways, for example, as 860718244 + 7247968225 = 29338^2 + 85135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-8108686469 is a prime.

It is a super-2 number, since 2×8108686469² (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 (8108686489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18345224 + ... + 18345665.

It is an arithmetic number, because the mean of its divisors is an integer number (1155763035).

Almost surely, 2^8108686469 is an apocalyptic number.

It is an amenable number.

8108686469 is a deficient number, since it is larger than the sum of its proper divisors (1137417811).

8108686469 is a wasteful number, since it uses less digits than its factorization.

8108686469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36690919.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The square root of 8108686469 is about 90048.2452299877. The cubic root of 8108686469 is about 2009.0164960647.

The spelling of 8108686469 in words is "eight billion, one hundred eight million, six hundred eighty-six thousand, four hundred sixty-nine".