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8105395147 = 47916921493
BaseRepresentation
bin1111000110001111…
…01000001111001011
3202220212201201212021
413203013220033023
5113044440121042
63420142425311
7404600502433
oct74307501713
922825651767
108105395147
11348a314383
1216a2592237
139c2325505
1456c6a12c3
153268b8867
hex1e31e83cb

8105395147 has 4 divisors (see below), whose sum is σ = 8122317120. Its totient is φ = 8088473176.

The previous prime is 8105395091. The next prime is 8105395163. The reversal of 8105395147 is 7415935018.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8105395147 - 211 = 8105393099 is a prime.

It is a super-2 number, since 2×81053951472 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8105395747) 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, 8460268 + ... + 8461225.

It is an arithmetic number, because the mean of its divisors is an integer number (2030579280).

Almost surely, 28105395147 is an apocalyptic number.

8105395147 is a deficient number, since it is larger than the sum of its proper divisors (16921973).

8105395147 is a wasteful number, since it uses less digits than its factorization.

8105395147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16921972.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 8105395147 is about 90029.9680495334. The cubic root of 8105395147 is about 2008.7446388382.

The spelling of 8105395147 in words is "eight billion, one hundred five million, three hundred ninety-five thousand, one hundred forty-seven".

Divisors: 1 479 16921493 8105395147