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9708853381 = 10219509161
BaseRepresentation
bin10010000101011000…
…10101100010000101
3221001121220212001021
421002230111202011
5124340431302011
64243222231141
7462410614663
oct110254254205
927047825037
109708853381
114132438277
121a6b5854b1
13bb959c376
14681615c33
153bc54c471
hex242b15885

9708853381 has 4 divisors (see below), whose sum is σ = 9718363564. Its totient is φ = 9699343200.

The previous prime is 9708853369. The next prime is 9708853397. The reversal of 9708853381 is 1833588079.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1718102500 + 7990750881 = 41450^2 + 89391^2 .

It is a cyclic number.

It is not a de Polignac number, because 9708853381 - 213 = 9708845189 is a prime.

It is a super-2 number, since 2×97088533812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9708850381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4753560 + ... + 4755601.

It is an arithmetic number, because the mean of its divisors is an integer number (2429590891).

Almost surely, 29708853381 is an apocalyptic number.

It is an amenable number.

9708853381 is a deficient number, since it is larger than the sum of its proper divisors (9510183).

9708853381 is a wasteful number, since it uses less digits than its factorization.

9708853381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510182.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 9708853381 is about 98533.5139990450. The cubic root of 9708853381 is about 2133.3198818786.

The spelling of 9708853381 in words is "nine billion, seven hundred eight million, eight hundred fifty-three thousand, three hundred eighty-one".

Divisors: 1 1021 9509161 9708853381