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18143133 = 343313967
BaseRepresentation
bin100010100110…
…1011110011101
31021010202200220
41011031132131
514121040013
61444511553
7310133301
oct105153635
937122626
1018143133
11a272228
1260ab5b9
1339b31a8
1425a3d01
1518d5b23
hex114d79d

18143133 has 8 divisors (see below), whose sum is σ = 24248448. Its totient is φ = 12066624.

The previous prime is 18143123. The next prime is 18143137. The reversal of 18143133 is 33134181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18143133 - 25 = 18143101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18143137) 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, 5685 + ... + 8282.

It is an arithmetic number, because the mean of its divisors is an integer number (3031056).

It is a self-describing number.

Almost surely, 218143133 is an apocalyptic number.

It is an amenable number.

18143133 is a deficient number, since it is larger than the sum of its proper divisors (6105315).

18143133 is a wasteful number, since it uses less digits than its factorization.

18143133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14403.

The product of its digits is 864, while the sum is 24.

The square root of 18143133 is about 4259.4756719578. The cubic root of 18143133 is about 262.7669628735.

The spelling of 18143133 in words is "eighteen million, one hundred forty-three thousand, one hundred thirty-three".

Divisors: 1 3 433 1299 13967 41901 6047711 18143133