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18669083 = 19396731
BaseRepresentation
bin100011100110…
…1111000011011
31022010111011112
41013031320123
514234402313
61504050535
7314453546
oct107157033
938114145
1018669083
11a5a13a4
126303a4b
133b386c4
14269d85d
15198b8a8
hex11cde1b

18669083 has 4 divisors (see below), whose sum is σ = 18766008. Its totient is φ = 18572160.

The previous prime is 18669073. The next prime is 18669103. The reversal of 18669083 is 38096681.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38096681 = 75442383.

It is a cyclic number.

It is not a de Polignac number, because 18669083 - 24 = 18669067 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 18669083.

It is not an unprimeable number, because it can be changed into a prime (18669073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48173 + ... + 48558.

It is an arithmetic number, because the mean of its divisors is an integer number (4691502).

Almost surely, 218669083 is an apocalyptic number.

18669083 is a deficient number, since it is larger than the sum of its proper divisors (96925).

18669083 is an equidigital number, since it uses as much as digits as its factorization.

18669083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96924.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18669083 is about 4320.7734261356. The cubic root of 18669083 is about 265.2819261380.

The spelling of 18669083 in words is "eighteen million, six hundred sixty-nine thousand, eighty-three".

Divisors: 1 193 96731 18669083