Search a number
-
+
18341269 = 67327253
BaseRepresentation
bin100010111110…
…1110110010101
31021111211111021
41011331312111
514143410034
61453041141
7311620042
oct105756625
937454437
1018341269
11a398081
1261861b1
133a5242b
1426161c9
1519246b4
hex117dd95

18341269 has 4 divisors (see below), whose sum is σ = 18369196. Its totient is φ = 18313344.

The previous prime is 18341261. The next prime is 18341293. The reversal of 18341269 is 96214381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96214381 = 311309371.

It can be written as a sum of positive squares in 2 ways, for example, as 7700625 + 10640644 = 2775^2 + 3262^2 .

It is a cyclic number.

It is not a de Polignac number, because 18341269 - 23 = 18341261 is a prime.

It is a super-2 number, since 2×183412692 = 672804297060722, 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 (18341261) 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, 12954 + ... + 14299.

It is an arithmetic number, because the mean of its divisors is an integer number (4592299).

Almost surely, 218341269 is an apocalyptic number.

It is an amenable number.

18341269 is a deficient number, since it is larger than the sum of its proper divisors (27927).

18341269 is an equidigital number, since it uses as much as digits as its factorization.

18341269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27926.

The product of its digits is 10368, while the sum is 34.

The square root of 18341269 is about 4282.6707788482. The cubic root of 18341269 is about 263.7200362777.

The spelling of 18341269 in words is "eighteen million, three hundred forty-one thousand, two hundred sixty-nine".

Divisors: 1 673 27253 18341269