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8194708805 = 57322451257
BaseRepresentation
bin1111010000111000…
…10101010101000101
3210011002210100011112
413220130111111011
5113240321140210
63433053014405
7410033606213
oct75034252505
923132710145
108194708805
113525777018
121708484405
13a07996c2a
1457a4adcb3
1532e65bd05
hex1e8715545

8194708805 has 8 divisors (see below), whose sum is σ = 9968358552. Its totient is φ = 6465961728.

The previous prime is 8194708793. The next prime is 8194708859. The reversal of 8194708805 is 5088074918.

It can be written as a sum of positive squares in 4 ways, for example, as 1251319876 + 6943388929 = 35374^2 + 83327^2 .

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 8194708805 - 28 = 8194708549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11225264 + ... + 11225993.

It is an arithmetic number, because the mean of its divisors is an integer number (1246044819).

Almost surely, 28194708805 is an apocalyptic number.

It is an amenable number.

8194708805 is a deficient number, since it is larger than the sum of its proper divisors (1773649747).

8194708805 is a wasteful number, since it uses less digits than its factorization.

8194708805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22451335.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 8194708805 is about 90524.6309299298. The cubic root of 8194708805 is about 2016.0958480828.

The spelling of 8194708805 in words is "eight billion, one hundred ninety-four million, seven hundred eight thousand, eight hundred five".

Divisors: 1 5 73 365 22451257 112256285 1638941761 8194708805