Search a number
-
+
13854092591 = 17814946623
BaseRepresentation
bin11001110011100010…
…01010110100101111
31022202111220211020102
430321301022310233
5211333121430331
610210421141315
71000213562333
oct147161126457
938674824212
1013854092591
11596a3018a9
12282785a83b
1313ca313a31
14955d757c3
155614114cb
hex339c4ad2f

13854092591 has 4 divisors (see below), whose sum is σ = 14669039232. Its totient is φ = 13039145952.

The previous prime is 13854092537. The next prime is 13854092597. The reversal of 13854092591 is 19529045831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19529045831 = 41476318191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13854092591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13854092597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407473295 + ... + 407473328.

It is an arithmetic number, because the mean of its divisors is an integer number (3667259808).

Almost surely, 213854092591 is an apocalyptic number.

13854092591 is a deficient number, since it is larger than the sum of its proper divisors (814946641).

13854092591 is an equidigital number, since it uses as much as digits as its factorization.

13854092591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814946640.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 13854092591 in words is "thirteen billion, eight hundred fifty-four million, ninety-two thousand, five hundred ninety-one".

Divisors: 1 17 814946623 13854092591