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1912123083 = 313192580463
BaseRepresentation
bin111000111111000…
…1010111011001011
311221020222220202110
41301332022323023
512404000414313
6513423233403
765245530603
oct16176127313
94836886673
101912123083
118a1386412
12454448863
132461b98a0
14141d41c03
15b2d04ec3
hex71f8aecb

1912123083 has 16 divisors (see below), whose sum is σ = 2890119680. Its totient is φ = 1114759584.

The previous prime is 1912123069. The next prime is 1912123133. The reversal of 1912123083 is 3803212191.

It is not a de Polignac number, because 1912123083 - 24 = 1912123067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1912123083.

It is not an unprimeable number, because it can be changed into a prime (1912123013) 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, 1289491 + ... + 1290972.

It is an arithmetic number, because the mean of its divisors is an integer number (180632480).

Almost surely, 21912123083 is an apocalyptic number.

1912123083 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1912123083 is a deficient number, since it is larger than the sum of its proper divisors (977996597).

1912123083 is a wasteful number, since it uses less digits than its factorization.

1912123083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580498.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1912123083 is about 43727.8296168470. The cubic root of 1912123083 is about 1241.1909912935.

The spelling of 1912123083 in words is "one billion, nine hundred twelve million, one hundred twenty-three thousand, eighty-three".

Divisors: 1 3 13 19 39 57 247 741 2580463 7741389 33546019 49028797 100638057 147086391 637374361 1912123083