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13854289181 is a prime number
BaseRepresentation
bin11001110011100011…
…11010110100011101
31022202112021210220112
430321301322310131
5211333144223211
610210425255405
71000215341435
oct147161726435
938675253815
1013854289181
11596a426577
122827934565
1313ca382365
14955dc72c5
1556144e88b
hex339c7ad1d

13854289181 has 2 divisors, whose sum is σ = 13854289182. Its totient is φ = 13854289180.

The previous prime is 13854289151. The next prime is 13854289237. The reversal of 13854289181 is 18198245831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7078529956 + 6775759225 = 84134^2 + 82315^2 .

It is a cyclic number.

It is not a de Polignac number, because 13854289181 - 26 = 13854289117 is a prime.

It is a super-3 number, since 3×138542891813 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13854289151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6927144590 + 6927144591.

It is an arithmetic number, because the mean of its divisors is an integer number (6927144591).

Almost surely, 213854289181 is an apocalyptic number.

It is an amenable number.

13854289181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13854289181 is an equidigital number, since it uses as much as digits as its factorization.

13854289181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 50.

The spelling of 13854289181 in words is "thirteen billion, eight hundred fifty-four million, two hundred eighty-nine thousand, one hundred eighty-one".