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7868104161 = 32622701387
BaseRepresentation
bin1110101001111100…
…11011110111100001
3202022100020002211020
413110332123313201
5112103213313121
63340424440053
7365656532121
oct72476336741
922270202736
107868104161
113378381125
121637019029
13985112748
14548d72c81
15310b451c6
hex1d4f9bde1

7868104161 has 4 divisors (see below), whose sum is σ = 10490805552. Its totient is φ = 5245402772.

The previous prime is 7868104159. The next prime is 7868104187. The reversal of 7868104161 is 1614018687.

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: 1614018687 = 3538006229.

It is a cyclic number.

It is not a de Polignac number, because 7868104161 - 21 = 7868104159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7868104061) 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, 1311350691 + ... + 1311350696.

It is an arithmetic number, because the mean of its divisors is an integer number (2622701388).

Almost surely, 27868104161 is an apocalyptic number.

It is an amenable number.

7868104161 is a deficient number, since it is larger than the sum of its proper divisors (2622701391).

7868104161 is a wasteful number, since it uses less digits than its factorization.

7868104161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622701390.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 7868104161 is about 88702.3345859623. The cubic root of 7868104161 is about 1988.9477160994.

The spelling of 7868104161 in words is "seven billion, eight hundred sixty-eight million, one hundred four thousand, one hundred sixty-one".

Divisors: 1 3 2622701387 7868104161