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18534053 = 71261043
BaseRepresentation
bin100011010110…
…0111010100101
31021212121221102
41012230322211
514221042203
61501125445
7313352066
oct106547245
937777842
1018534053
11a5099aa
126259885
133abc0c5
14266656d
151961888
hex11acea5

18534053 has 4 divisors (see below), whose sum is σ = 18795168. Its totient is φ = 18272940.

The previous prime is 18534049. The next prime is 18534059. The reversal of 18534053 is 35043581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18534053 - 22 = 18534049 is a prime.

It is a super-2 number, since 2×185340532 = 687022241213618, 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 (18534059) 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 3 ways as a sum of consecutive naturals, for example, 130451 + ... + 130592.

It is an arithmetic number, because the mean of its divisors is an integer number (4698792).

Almost surely, 218534053 is an apocalyptic number.

It is an amenable number.

18534053 is a deficient number, since it is larger than the sum of its proper divisors (261115).

18534053 is an equidigital number, since it uses as much as digits as its factorization.

18534053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261114.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 18534053 is about 4305.1193943955. The cubic root of 18534053 is about 264.6407996752.

The spelling of 18534053 in words is "eighteen million, five hundred thirty-four thousand, fifty-three".

Divisors: 1 71 261043 18534053