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1680031089 = 321127676133
BaseRepresentation
bin110010000100011…
…0011110101110001
311100002021102101200
41210020303311301
511420041443324
6434412521413
756430012552
oct14410636561
94302242350
101680031089
11792374250
123aa780269
1320a0a7349
1411d1a8329
159c75bec9
hex64233d71

1680031089 has 24 divisors (see below), whose sum is σ = 2648710272. Its totient is φ = 1017666720.

The previous prime is 1680031063. The next prime is 1680031109. The reversal of 1680031089 is 9801300861.

It is not a de Polignac number, because 1680031089 - 211 = 1680029041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1680031009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270867 + ... + 276999.

It is an arithmetic number, because the mean of its divisors is an integer number (110362928).

Almost surely, 21680031089 is an apocalyptic number.

It is an amenable number.

1680031089 is a deficient number, since it is larger than the sum of its proper divisors (968679183).

1680031089 is a wasteful number, since it uses less digits than its factorization.

1680031089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917 (or 8914 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1680031089 is about 40988.1823090510. The cubic root of 1680031089 is about 1188.7917234673.

The spelling of 1680031089 in words is "one billion, six hundred eighty million, thirty-one thousand, eighty-nine".

Divisors: 1 3 9 11 33 99 2767 6133 8301 18399 24903 30437 55197 67463 91311 202389 273933 607167 16970011 50910033 152730099 186670121 560010363 1680031089