Base | Representation |
---|---|
bin | 1111001001110001… |
… | …11101000101100011 |
3 | 202222221122001010102 |
4 | 13210320331011203 |
5 | 113130041242234 |
6 | 3423123253015 |
7 | 405411142634 |
oct | 74470750543 |
9 | 22887561112 |
10 | 8135102819 |
11 | 34a5065178 |
12 | 16b051a16b |
13 | 9c852740c |
14 | 5725d588b |
15 | 3292d5c7e |
hex | 1e4e3d163 |
8135102819 has 4 divisors (see below), whose sum is σ = 8135835360. Its totient is φ = 8134370280.
The previous prime is 8135102813. The next prime is 8135102869. The reversal of 8135102819 is 9182015318.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 8135102819 - 224 = 8118325603 is a prime.
It is a super-2 number, since 2×81351028192 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (8135102813) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349352 + ... + 371909.
It is an arithmetic number, because the mean of its divisors is an integer number (2033958840).
Almost surely, 28135102819 is an apocalyptic number.
8135102819 is a deficient number, since it is larger than the sum of its proper divisors (732541).
8135102819 is a wasteful number, since it uses less digits than its factorization.
8135102819 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 732540.
The product of its (nonzero) digits is 17280, while the sum is 38.
The square root of 8135102819 is about 90194.8048337597. The cubic root of 8135102819 is about 2011.1957785760.
The spelling of 8135102819 in words is "eight billion, one hundred thirty-five million, one hundred two thousand, eight hundred nineteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.061 sec. • engine limits •