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2130170779 = 11433447233
BaseRepresentation
bin111111011110111…
…1101001110011011
312111110021212222001
41332331331032123
513330310431104
6551212541431
7103534103302
oct17675751633
95443255861
102130170779
119a3475920
124b5481877
1327c4227a9
14162ca1439
15c7026aa4
hex7ef7d39b

2130170779 has 8 divisors (see below), whose sum is σ = 2329194672. Its totient is φ = 1932042240.

The previous prime is 2130170747. The next prime is 2130170827. The reversal of 2130170779 is 9770710312.

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 2130170779 - 25 = 2130170747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130170479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218854 + ... + 228379.

It is an arithmetic number, because the mean of its divisors is an integer number (291149334).

Almost surely, 22130170779 is an apocalyptic number.

2130170779 is a deficient number, since it is larger than the sum of its proper divisors (199023893).

2130170779 is a wasteful number, since it uses less digits than its factorization.

2130170779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447677.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 2130170779 is about 46153.7731826987. The cubic root of 2130170779 is about 1286.6827372404.

The spelling of 2130170779 in words is "two billion, one hundred thirty million, one hundred seventy thousand, seven hundred seventy-nine".

Divisors: 1 11 433 4763 447233 4919563 193651889 2130170779