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8685980549 = 191792553949
BaseRepresentation
bin10000001011011100…
…11000101110000101
3211102100012112022022
420011232120232011
5120242102334144
63553522412525
7425150421311
oct100556305605
924370175268
108685980549
113758011824
121824b01145
13a856b427c
145c5832b41
1535c84dcee
hex205b98b85

8685980549 has 8 divisors (see below), whose sum is σ = 9194220000. Its totient is φ = 8182849392.

The previous prime is 8685980539. The next prime is 8685980557. The reversal of 8685980549 is 9450895868.

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 8685980549 - 28 = 8685980293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8685980491 and 8685980500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8685980519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273574 + ... + 1280375.

It is an arithmetic number, because the mean of its divisors is an integer number (1149277500).

Almost surely, 28685980549 is an apocalyptic number.

It is an amenable number.

8685980549 is a deficient number, since it is larger than the sum of its proper divisors (508239451).

8685980549 is a wasteful number, since it uses less digits than its factorization.

8685980549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554147.

The product of its (nonzero) digits is 24883200, while the sum is 62.

The square root of 8685980549 is about 93198.6080850996. The cubic root of 8685980549 is about 2055.6047733497.

The spelling of 8685980549 in words is "eight billion, six hundred eighty-five million, nine hundred eighty thousand, five hundred forty-nine".

Divisors: 1 19 179 3401 2553949 48525031 457156871 8685980549