| Base | Representation |
|---|---|
| bin | 111011100110101… |
| … | …100101000001000 |
| 3 | 2120200200021010100 |
| 4 | 323212230220020 |
| 5 | 4022000000013 |
| 6 | 243121245400 |
| 7 | 33531600630 |
| oct | 7346545010 |
| 9 | 2520607110 |
| 10 | 1000000008 |
| 11 | 473523897 |
| 12 | 23aa93860 |
| 13 | 12c23a1a7 |
| 14 | 96b4b6c0 |
| 15 | 5cbd1473 |
| hex | 3b9aca08 |
1000000008 has 144 divisors (see below), whose sum is σ = 3142601280. Its totient is φ = 281397888.
The previous prime is 1000000007. The next prime is 1000000009. The reversal of 1000000008 is 8000000001.
It is an interprime number because it is at equal distance from previous prime (1000000007) and next prime (1000000009).
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is not an unprimeable number, because it can be changed into a prime (1000000007) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5987941 + ... + 5988107.
It is an arithmetic number, because the mean of its divisors is an integer number (21823620).
Almost surely, 21000000008 is an apocalyptic number.
1000000008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1000000008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571300640).
1000000008 is an abundant number, since it is smaller than the sum of its proper divisors (2142601272).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1000000008 is a wasteful number, since it uses less digits than its factorization.
1000000008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 404 (or 288 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 9.
The square root of 1000000008 is about 31622.7767281749. The cubic root of 1000000008 is about 1000.0000026667. Note that the first 5 decimals are identical.
Adding to 1000000008 its reverse (8000000001), we get a palindrome (9000000009).
The spelling of 1000000008 in words is "one billion, eight", and thus it is an aban number and an uban number.
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