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8159390393 = 711105966109
BaseRepresentation
bin1111001100101011…
…00110101010111001
3210001122022222102012
413212111212222321
5113202300443033
63425352015305
7406124450120
oct74625465271
923048288365
108159390393
113507843850
1216b8691535
13a0057c26b
14575918ab7
1532b4d2248
hex1e6566ab9

8159390393 has 8 divisors (see below), whose sum is σ = 10172746560. Its totient is φ = 6357966480.

The previous prime is 8159390353. The next prime is 8159390401. The reversal of 8159390393 is 3930939518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8159390393 - 216 = 8159324857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8159390353) 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 7 ways as a sum of consecutive naturals, for example, 52982978 + ... + 52983131.

It is an arithmetic number, because the mean of its divisors is an integer number (1271593320).

Almost surely, 28159390393 is an apocalyptic number.

It is an amenable number.

8159390393 is a deficient number, since it is larger than the sum of its proper divisors (2013356167).

8159390393 is a wasteful number, since it uses less digits than its factorization.

8159390393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105966127.

The product of its (nonzero) digits is 787320, while the sum is 50.

The square root of 8159390393 is about 90329.3440306083. The cubic root of 8159390393 is about 2013.1952835376.

The spelling of 8159390393 in words is "eight billion, one hundred fifty-nine million, three hundred ninety thousand, three hundred ninety-three".

Divisors: 1 7 11 77 105966109 741762763 1165627199 8159390393