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1913889848 = 231322116709
BaseRepresentation
bin111001000010011…
…1010010000111000
311221101022200022012
41302010322100320
512404423433343
6513525145052
765266536533
oct16204722070
94841280265
101913889848
118a2382852
12454b5b188
13246687b00
14142281a1a
15b3053718
hex7213a438

1913889848 has 48 divisors (see below), whose sum is σ = 3904817400. Its totient is φ = 879016320.

The previous prime is 1913889839. The next prime is 1913889851. The reversal of 1913889848 is 8489883191.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 281918 + ... + 288626.

Almost surely, 21913889848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913889848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1952408700).

1913889848 is an abundant number, since it is smaller than the sum of its proper divisors (1990927552).

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

1913889848 is a wasteful number, since it uses less digits than its factorization.

1913889848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952 (or 6935 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 59.

The square root of 1913889848 is about 43748.0267897879. The cubic root of 1913889848 is about 1241.5731524927.

The spelling of 1913889848 in words is "one billion, nine hundred thirteen million, eight hundred eighty-nine thousand, eight hundred forty-eight".

Divisors: 1 2 4 8 13 26 52 104 169 211 338 422 676 844 1352 1688 2743 5486 6709 10972 13418 21944 26836 35659 53672 71318 87217 142636 174434 285272 348868 697736 1133821 1415599 2267642 2831198 4535284 5662396 9070568 11324792 18402787 36805574 73611148 147222296 239236231 478472462 956944924 1913889848