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18013301 = 231814327
BaseRepresentation
bin100010010110…
…1110001110101
31020220011121022
41010231301311
514102411201
61442030525
7306052625
oct104556165
936804538
1018013301
11a193729
126048445
133969077
14256c885
1518ac41b
hex112dc75

18013301 has 8 divisors (see below), whose sum is σ = 18904704. Its totient is φ = 17130960.

The previous prime is 18013297. The next prime is 18013313. The reversal of 18013301 is 10331081.

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 18013301 - 22 = 18013297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18013301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18013381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (2363088).

Almost surely, 218013301 is an apocalyptic number.

It is an amenable number.

18013301 is a deficient number, since it is larger than the sum of its proper divisors (891403).

18013301 is a wasteful number, since it uses less digits than its factorization.

18013301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 18013301 is about 4244.2079355281. The cubic root of 18013301 is about 262.1386762702.

Adding to 18013301 its reverse (10331081), we get a palindrome (28344382).

The spelling of 18013301 in words is "eighteen million, thirteen thousand, three hundred one".

Divisors: 1 23 181 4163 4327 99521 783187 18013301