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8107741849 = 12727092
BaseRepresentation
bin1111000110100001…
…00101001010011001
3202221001010221221011
413203100211022121
5113101040214344
63420305013521
7404626445224
oct74320451231
922831127834
108107741849
1134906774a9
1216a33242a1
139c29676ac
1456cb125bb
15326bcdd34
hex1e3425299

8107741849 has 9 divisors (see below), whose sum is σ = 8183627487. Its totient is φ = 8032555944.

The previous prime is 8107741843. The next prime is 8107741853. The reversal of 8107741849 is 9481477018.

The square root of 8107741849 is 90043.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1081949449 + 7025792400 = 32893^2 + 83820^2 .

It is not a de Polignac number, because 8107741849 - 219 = 8107217561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8107741843) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11435107 + ... + 11435815.

It is an arithmetic number, because the mean of its divisors is an integer number (909291943).

Almost surely, 28107741849 is an apocalyptic number.

8107741849 is the 90043-rd square number.

8107741849 is the 45022-nd centered octagonal number.

It is an amenable number.

8107741849 is a deficient number, since it is larger than the sum of its proper divisors (75885638).

8107741849 is an frugal number, since it uses more digits than its factorization.

8107741849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The cubic root of 8107741849 is about 2008.9384796943.

Multiplying 8107741849 by its sum of digits (49), we get a square (397279350601 = 6303012).

It can be divided in two parts, 8107 and 741849, that added together give a square (749956 = 8662).

The spelling of 8107741849 in words is "eight billion, one hundred seven million, seven hundred forty-one thousand, eight hundred forty-nine".

Divisors: 1 127 709 16129 90043 502681 11435461 63840487 8107741849