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1908680982 = 231358741687
BaseRepresentation
bin111000111000100…
…0010100100010110
311221000112001002020
41301301002210112
512402110242412
6513221354010
765204343405
oct16161024426
94830461066
101908680982
1189a4452aa
12453268906
13245582c40
141416c763c
15b287518c
hex71c42916

1908680982 has 32 divisors (see below), whose sum is σ = 4118107392. Its totient is φ = 586271904.

The previous prime is 1908680971. The next prime is 1908680987. The reversal of 1908680982 is 2890868091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1908680987) 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 15 ways as a sum of consecutive naturals, for example, 24943 + ... + 66629.

It is an arithmetic number, because the mean of its divisors is an integer number (128690856).

Almost surely, 21908680982 is an apocalyptic number.

1908680982 is an abundant number, since it is smaller than the sum of its proper divisors (2209426410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1908680982 is a wasteful number, since it uses less digits than its factorization.

1908680982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42292.

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 1908680982 is about 43688.4536462439. The cubic root of 1908680982 is about 1240.4457688845.

The spelling of 1908680982 in words is "one billion, nine hundred eight million, six hundred eighty thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 13 26 39 78 587 1174 1761 3522 7631 15262 22893 41687 45786 83374 125061 250122 541931 1083862 1625793 3251586 24470269 48940538 73410807 146821614 318113497 636226994 954340491 1908680982