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195142653 = 3229747673
BaseRepresentation
bin10111010000110…
…10001111111101
3111121012021101200
423220122033331
5344424031103
631210330113
74556454006
oct1350321775
9447167350
10195142653
11a0175622
1255429939
1331576434
141bcba1ad
15121ea0a3
hexba1a3fd

195142653 has 12 divisors (see below), whose sum is σ = 291592860. Its totient is φ = 125608896.

The previous prime is 195142621. The next prime is 195142681. The reversal of 195142653 is 356241591.

It can be written as a sum of positive squares in 2 ways, for example, as 96000804 + 99141849 = 9798^2 + 9957^2 .

It is not a de Polignac number, because 195142653 - 25 = 195142621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195142253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373576 + ... + 374097.

It is an arithmetic number, because the mean of its divisors is an integer number (24299405).

Almost surely, 2195142653 is an apocalyptic number.

It is an amenable number.

195142653 is a deficient number, since it is larger than the sum of its proper divisors (96450207).

195142653 is a wasteful number, since it uses less digits than its factorization.

195142653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747708 (or 747705 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 195142653 is about 13969.3469067097. The cubic root of 195142653 is about 580.0303719727.

The spelling of 195142653 in words is "one hundred ninety-five million, one hundred forty-two thousand, six hundred fifty-three".

Divisors: 1 3 9 29 87 261 747673 2243019 6729057 21682517 65047551 195142653