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13868489097 = 321540943233
BaseRepresentation
bin11001110101010000…
…00101100110001001
31022210112000020112100
430322220011212021
5211400313122342
610212053504013
71000450132551
oct147250054611
938715006470
1013868489097
115977445141
122830642009
1314002b4788
14957c42161
15562806e4c
hex33aa05989

13868489097 has 6 divisors (see below), whose sum is σ = 20032262042. Its totient is φ = 9245659392.

The previous prime is 13868489087. The next prime is 13868489111. The reversal of 13868489097 is 79098486831.

13868489097 is a `hidden beast` number, since 1 + 3 + 8 + 68 + 489 + 0 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13866475536 + 2013561 = 117756^2 + 1419^2 .

It is not a de Polignac number, because 13868489097 - 24 = 13868489081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13868489017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 770471608 + ... + 770471625.

Almost surely, 213868489097 is an apocalyptic number.

It is an amenable number.

13868489097 is a deficient number, since it is larger than the sum of its proper divisors (6163772945).

13868489097 is a wasteful number, since it uses less digits than its factorization.

13868489097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540943239 (or 1540943236 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 13868489097 in words is "thirteen billion, eight hundred sixty-eight million, four hundred eighty-nine thousand, ninety-seven".

Divisors: 1 3 9 1540943233 4622829699 13868489097