Base | Representation |
---|---|
bin | 111100101111001… |
… | …000110110110111 |
3 | 2122000102001111122 |
4 | 330233020312313 |
5 | 4041330140012 |
6 | 245040254155 |
7 | 34152162230 |
oct | 7457106667 |
9 | 2560361448 |
10 | 1018990007 |
11 | 483214302 |
12 | 24531135b |
13 | 133158989 |
14 | 99492087 |
15 | 5e6d2e72 |
hex | 3cbc8db7 |
1018990007 has 12 divisors (see below), whose sum is σ = 1229081616. Its totient is φ = 827448480.
The previous prime is 1018990001. The next prime is 1018990039. The reversal of 1018990007 is 7000998101.
It is not a de Polignac number, because 1018990007 - 210 = 1018988983 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1018990001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199094 + ... + 204147.
It is an arithmetic number, because the mean of its divisors is an integer number (102423468).
Almost surely, 21018990007 is an apocalyptic number.
1018990007 is a deficient number, since it is larger than the sum of its proper divisors (210091609).
1018990007 is an equidigital number, since it uses as much as digits as its factorization.
1018990007 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 403286 (or 403267 counting only the distinct ones).
The product of its (nonzero) digits is 4536, while the sum is 35.
The square root of 1018990007 is about 31921.6228754116. The cubic root of 1018990007 is about 1006.2903508529.
The spelling of 1018990007 in words is "one billion, eighteen million, nine hundred ninety thousand, seven".
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