Base | Representation |
---|---|
bin | 1000000010100111… |
… | …1010101001111001 |
3 | 12120102112201200001 |
4 | 2000221322221321 |
5 | 13410032044201 |
6 | 554103313001 |
7 | 104326464463 |
oct | 20051725171 |
9 | 5512481601 |
10 | 2158471801 |
11 | a084458a2 |
12 | 502a4b761 |
13 | 285251365 |
14 | 16694b133 |
15 | c9767301 |
hex | 80a7aa79 |
2158471801 has 8 divisors (see below), whose sum is σ = 2275294400. Its totient is φ = 2041971120.
The previous prime is 2158471787. The next prime is 2158471829. The reversal of 2158471801 is 1081748512.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2158471801 - 213 = 2158463609 is a prime.
It is a super-5 number, since 5×21584718015 (a number of 48 digits) contains 55555 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2158471831) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66645 + ... + 93586.
It is an arithmetic number, because the mean of its divisors is an integer number (284411800).
Almost surely, 22158471801 is an apocalyptic number.
It is an amenable number.
2158471801 is a deficient number, since it is larger than the sum of its proper divisors (116822599).
2158471801 is a wasteful number, since it uses less digits than its factorization.
2158471801 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 160959.
The product of its (nonzero) digits is 17920, while the sum is 37.
The square root of 2158471801 is about 46459.3564419483. The cubic root of 2158471801 is about 1292.3558897874.
The spelling of 2158471801 in words is "two billion, one hundred fifty-eight million, four hundred seventy-one thousand, eight hundred one".
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