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518130669 = 3727299041
BaseRepresentation
bin11110111000100…
…000101111101101
31100002221202122210
4132320200233231
52030120140134
6123225201033
715561016020
oct3670405755
91302852583
10518130669
11246520271
12125630179
13834626c4
144cb551b7
153074a2e9
hex1ee20bed

518130669 has 16 divisors (see below), whose sum is σ = 789909120. Its totient is φ = 295933440.

The previous prime is 518130661. The next prime is 518130727. The reversal of 518130669 is 966031815.

It is not a de Polignac number, because 518130669 - 23 = 518130661 is a prime.

It is a super-2 number, since 2×5181306692 = 536918780316775122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518130661) 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, 52789 + ... + 61829.

It is an arithmetic number, because the mean of its divisors is an integer number (49369320).

Almost surely, 2518130669 is an apocalyptic number.

It is an amenable number.

518130669 is a deficient number, since it is larger than the sum of its proper divisors (271778451).

518130669 is a wasteful number, since it uses less digits than its factorization.

518130669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11780.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 518130669 is about 22762.4838055956. The cubic root of 518130669 is about 803.1803963646.

The spelling of 518130669 in words is "five hundred eighteen million, one hundred thirty thousand, six hundred sixty-nine".

Divisors: 1 3 7 21 2729 8187 9041 19103 27123 57309 63287 189861 24672889 74018667 172710223 518130669