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195083109 = 32131798081
BaseRepresentation
bin10111010000010…
…11101101100101
3111121002020201100
423220023231211
5344420124414
631205150313
74556115264
oct1350135545
9447066640
10195083109
11a0134911
12553bb399
13315552c0
141bca25db
15121d7609
hexba0bb65

195083109 has 24 divisors (see below), whose sum is σ = 321316632. Its totient is φ = 112988160.

The previous prime is 195083107. The next prime is 195083173. The reversal of 195083109 is 901380591.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 396900 + 194686209 = 630^2 + 13953^2 .

It is not a de Polignac number, because 195083109 - 21 = 195083107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195083101) 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, 47052 + ... + 51029.

It is an arithmetic number, because the mean of its divisors is an integer number (13388193).

Almost surely, 2195083109 is an apocalyptic number.

It is an amenable number.

195083109 is a deficient number, since it is larger than the sum of its proper divisors (126233523).

195083109 is a wasteful number, since it uses less digits than its factorization.

195083109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98117 (or 98114 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 195083109 is about 13967.2155063205. The cubic root of 195083109 is about 579.9713709610.

The spelling of 195083109 in words is "one hundred ninety-five million, eighty-three thousand, one hundred nine".

Divisors: 1 3 9 13 17 39 51 117 153 221 663 1989 98081 294243 882729 1275053 1667377 3825159 5002131 11475477 15006393 21675901 65027703 195083109