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18010349 = 73182997
BaseRepresentation
bin100010010110…
…1000011101101
31020220000112222
41010231003231
514102312344
61442005125
7306041210
oct104550355
936800488
1018010349
11a191495
1260467a5
133967916
14256b777
1518ab5ee
hex112d0ed

18010349 has 8 divisors (see below), whose sum is σ = 21247488. Its totient is φ = 14939280.

The previous prime is 18010339. The next prime is 18010367. The reversal of 18010349 is 94301081.

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 18010349 - 28 = 18010093 is a prime.

It is a super-2 number, since 2×180103492 = 648745342203602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18010319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41282 + ... + 41715.

It is an arithmetic number, because the mean of its divisors is an integer number (2655936).

Almost surely, 218010349 is an apocalyptic number.

It is an amenable number.

18010349 is a deficient number, since it is larger than the sum of its proper divisors (3237139).

18010349 is an equidigital number, since it uses as much as digits as its factorization.

18010349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83035.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18010349 is about 4243.8601532096. The cubic root of 18010349 is about 262.1243558217.

The spelling of 18010349 in words is "eighteen million, ten thousand, three hundred forty-nine".

Divisors: 1 7 31 217 82997 580979 2572907 18010349