Base | Representation |
---|---|
bin | 10110110000110… |
… | …000011011000111 |
3 | 222121120111212222 |
4 | 112300300123013 |
5 | 1240230130012 |
6 | 101521002555 |
7 | 12314632535 |
oct | 2660603307 |
9 | 877514788 |
10 | 381880007 |
11 | 18661a113 |
12 | a7a8345b |
13 | 61168b02 |
14 | 38a09155 |
15 | 237d4972 |
hex | 16c306c7 |
381880007 has 2 divisors, whose sum is σ = 381880008. Its totient is φ = 381880006.
The previous prime is 381880001. The next prime is 381880013. The reversal of 381880007 is 700088183.
It is a balanced prime because it is at equal distance from previous prime (381880001) and next prime (381880013).
It is a cyclic number.
It is not a de Polignac number, because 381880007 - 26 = 381879943 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (381880001) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190940003 + 190940004.
It is an arithmetic number, because the mean of its divisors is an integer number (190940004).
Almost surely, 2381880007 is an apocalyptic number.
381880007 is a deficient number, since it is larger than the sum of its proper divisors (1).
381880007 is an equidigital number, since it uses as much as digits as its factorization.
381880007 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 10752, while the sum is 35.
The square root of 381880007 is about 19541.7503566083. The cubic root of 381880007 is about 725.5081697689.
The spelling of 381880007 in words is "three hundred eighty-one million, eight hundred eighty thousand, seven".
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