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1916910677 = 11292917053
BaseRepresentation
bin111001001000001…
…1011110001010101
311221121000011002202
41302100123301111
512411212120202
6514114014245
765334320603
oct16220336125
94847004082
101916910677
118a4056400
12455b77385
132471a4a96
1414282a873
15b344d802
hex7241bc55

1916910677 has 12 divisors (see below), whose sum is σ = 2109409260. Its totient is φ = 1740668160.

The previous prime is 1916910673. The next prime is 1916910719. The reversal of 1916910677 is 7760196191.

It can be written as a sum of positive squares in 2 ways, for example, as 283619281 + 1633291396 = 16841^2 + 40414^2 .

It is not a de Polignac number, because 1916910677 - 22 = 1916910673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916910673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103883 + ... + 120935.

It is an arithmetic number, because the mean of its divisors is an integer number (175784105).

Almost surely, 21916910677 is an apocalyptic number.

It is an amenable number.

1916910677 is a deficient number, since it is larger than the sum of its proper divisors (192498583).

1916910677 is a wasteful number, since it uses less digits than its factorization.

1916910677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18004 (or 17993 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 47.

The square root of 1916910677 is about 43782.5384942445. The cubic root of 1916910677 is about 1242.2260303037.

The spelling of 1916910677 in words is "one billion, nine hundred sixteen million, nine hundred ten thousand, six hundred seventy-seven".

Divisors: 1 11 121 929 10219 17053 112409 187583 2063413 15842237 174264607 1916910677