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14918161 = 31481231
BaseRepresentation
bin111000111010…
…001000010001
31001001220212111
4320322020101
512304340121
61251425321
7240542116
oct70721021
931056774
1014918161
11846a265
124bb5241
13312431b
141da490d
15149a2e1
hexe3a211

14918161 has 4 divisors (see below), whose sum is σ = 15399424. Its totient is φ = 14436900.

The previous prime is 14918159. The next prime is 14918179. The reversal of 14918161 is 16181941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16181941 = 66124481.

It is a cyclic number.

It is not a de Polignac number, because 14918161 - 21 = 14918159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 481231 = 14918161 / (1 + 4 + 9 + 1 + 8 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14918861) 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, 240585 + ... + 240646.

It is an arithmetic number, because the mean of its divisors is an integer number (3849856).

Almost surely, 214918161 is an apocalyptic number.

It is an amenable number.

14918161 is a deficient number, since it is larger than the sum of its proper divisors (481263).

14918161 is an equidigital number, since it uses as much as digits as its factorization.

14918161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481262.

The product of its digits is 1728, while the sum is 31.

The square root of 14918161 is about 3862.4035263033. The cubic root of 14918161 is about 246.1718729712.

The spelling of 14918161 in words is "fourteen million, nine hundred eighteen thousand, one hundred sixty-one".

Divisors: 1 31 481231 14918161