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18068191174 = 2112673110939
BaseRepresentation
bin10000110100111100…
…101011011111000110
31201122012111012201201
4100310330223133012
5244000424104144
612144520013114
71206514043125
oct206474533706
951565435651
1018068191174
117732028500
12360300119a
13191c3b79a7
14c358dbabc
1570b3781d4
hex434f2b7c6

18068191174 has 24 divisors (see below), whose sum is σ = 29834650440. Its totient is φ = 8200536960.

The previous prime is 18068191171. The next prime is 18068191181. The reversal of 18068191174 is 47119186081.

It is a super-4 number, since 4×180681911744 (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18068191171) 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 11 ways as a sum of consecutive naturals, for example, 107397 + ... + 218335.

It is an arithmetic number, because the mean of its divisors is an integer number (1243110435).

Almost surely, 218068191174 is an apocalyptic number.

18068191174 is a deficient number, since it is larger than the sum of its proper divisors (11766459266).

18068191174 is a wasteful number, since it uses less digits than its factorization.

18068191174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111636 (or 111625 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 46.

The spelling of 18068191174 in words is "eighteen billion, sixty-eight million, one hundred ninety-one thousand, one hundred seventy-four".

Divisors: 1 2 11 22 121 242 673 1346 7403 14806 81433 110939 162866 221878 1220329 2440658 13423619 26847238 74661947 149323894 821281417 1642562834 9034095587 18068191174