Base | Representation |
---|---|
bin | 1101010010111100… |
… | …11010111000001011 |
3 | 200102110221202122222 |
4 | 12221132122320023 |
5 | 104104400304321 |
6 | 3140154204255 |
7 | 341615321432 |
oct | 65136327013 |
9 | 20373852588 |
10 | 7138291211 |
11 | 3033419927 |
12 | 147272368b |
13 | 899b6556c |
14 | 4ba078119 |
15 | 2bba343ab |
hex | 1a979ae0b |
7138291211 has 16 divisors (see below), whose sum is σ = 7620486624. Its totient is φ = 6663181824.
The previous prime is 7138291189. The next prime is 7138291231. The reversal of 7138291211 is 1121928317.
It is a de Polignac number, because none of the positive numbers 2k-7138291211 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (7138291231) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1633916 + ... + 1638278.
It is an arithmetic number, because the mean of its divisors is an integer number (476280414).
Almost surely, 27138291211 is an apocalyptic number.
7138291211 is a deficient number, since it is larger than the sum of its proper divisors (482195413).
7138291211 is a wasteful number, since it uses less digits than its factorization.
7138291211 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5150.
The product of its digits is 6048, while the sum is 35.
The square root of 7138291211 is about 84488.4087375304. The cubic root of 7138291211 is about 1925.4463426462.
The spelling of 7138291211 in words is "seven billion, one hundred thirty-eight million, two hundred ninety-one thousand, two hundred eleven".
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