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18368093 = 1031511181
BaseRepresentation
bin100011000010…
…0011001011101
31021120012021202
41012010121131
514200234333
61453405245
7312061202
oct106043135
937505252
1018368093
11a406247
126199825
133a616c3
142621ca9
15192c5e8
hex118465d

18368093 has 8 divisors (see below), whose sum is σ = 18685056. Its totient is φ = 18054000.

The previous prime is 18368071. The next prime is 18368111. The reversal of 18368093 is 39086381.

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 18368093 - 26 = 18368029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14963 + ... + 16143.

It is an arithmetic number, because the mean of its divisors is an integer number (2335632).

Almost surely, 218368093 is an apocalyptic number.

It is an amenable number.

18368093 is a deficient number, since it is larger than the sum of its proper divisors (316963).

18368093 is a wasteful number, since it uses less digits than its factorization.

18368093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 18368093 is about 4285.8013253066. The cubic root of 18368093 is about 263.8485366644.

The spelling of 18368093 in words is "eighteen million, three hundred sixty-eight thousand, ninety-three".

Divisors: 1 103 151 1181 15553 121643 178331 18368093