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2105622193 = 17239675569
BaseRepresentation
bin111110110000001…
…0011111010110001
312102202002200122011
41331200103322301
513303014402233
6544534442521
7103115331133
oct17540237261
95382080564
102105622193
11990629134
124a9203441
13277308bbc
1415d911053
15c4cc80cd
hex7d813eb1

2105622193 has 16 divisors (see below), whose sum is σ = 2329240320. Its totient is φ = 1893298176.

The previous prime is 2105622191. The next prime is 2105622203. The reversal of 2105622193 is 3912265012.

It is not a de Polignac number, because 2105622193 - 21 = 2105622191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105622191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375313 + ... + 380881.

It is an arithmetic number, because the mean of its divisors is an integer number (145577520).

Almost surely, 22105622193 is an apocalyptic number.

2105622193 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2105622193 is a deficient number, since it is larger than the sum of its proper divisors (223618127).

2105622193 is a wasteful number, since it uses less digits than its factorization.

2105622193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2105622193 is about 45887.0591016683. The cubic root of 2105622193 is about 1281.7209503357.

The spelling of 2105622193 in words is "two billion, one hundred five million, six hundred twenty-two thousand, one hundred ninety-three".

Divisors: 1 17 23 391 967 5569 16439 22241 94673 128087 378097 2177479 5385223 91548791 123860129 2105622193