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6989180907 = 341431131839
BaseRepresentation
bin1101000001001011…
…00110111111101011
3200001002101011210010
412200211212333223
5103303212242112
63113310223003
7335125025502
oct64045467753
920032334703
106989180907
112a67235075
1214307b4a63
13874cb8607
144a4341839
152ad8cd63c
hex1a0966feb

6989180907 has 16 divisors (see below), whose sum is σ = 9568419840. Its totient is φ = 4535227200.

The previous prime is 6989180899. The next prime is 6989180921. The reversal of 6989180907 is 7090819896.

It is not a de Polignac number, because 6989180907 - 23 = 6989180899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6989180927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12907 + ... + 118932.

It is an arithmetic number, because the mean of its divisors is an integer number (598026240).

Almost surely, 26989180907 is an apocalyptic number.

6989180907 is a deficient number, since it is larger than the sum of its proper divisors (2579238933).

6989180907 is a wasteful number, since it uses less digits than its factorization.

6989180907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132314.

The product of its (nonzero) digits is 1959552, while the sum is 57.

The square root of 6989180907 is about 83601.3212036748. The cubic root of 6989180907 is about 1911.9451421962.

The spelling of 6989180907 in words is "six billion, nine hundred eighty-nine million, one hundred eighty thousand, nine hundred seven".

Divisors: 1 3 41 123 431 1293 17671 53013 131839 395517 5405399 16216197 56822609 170467827 2329726969 6989180907