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195663443 is a prime number
BaseRepresentation
bin10111010100110…
…01011001010011
3111122011201210012
423222121121103
5400042212233
631225425135
74564053233
oct1352313123
9448151705
10195663443
11a04a0928
125563b1ab
13316c94b1
141bdb3cc3
151229e548
hexba99653

195663443 has 2 divisors, whose sum is σ = 195663444. Its totient is φ = 195663442.

The previous prime is 195663431. The next prime is 195663449. The reversal of 195663443 is 344366591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195663443 - 24 = 195663427 is a prime.

It is a super-2 number, since 2×1956634432 = 76568365853228498, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 195663443.

It is not a weakly prime, because it can be changed into another prime (195663449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97831721 + 97831722.

It is an arithmetic number, because the mean of its divisors is an integer number (97831722).

Almost surely, 2195663443 is an apocalyptic number.

195663443 is a deficient number, since it is larger than the sum of its proper divisors (1).

195663443 is an equidigital number, since it uses as much as digits as its factorization.

195663443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The square root of 195663443 is about 13987.9749427857. The cubic root of 195663443 is about 580.5459020032.

The spelling of 195663443 in words is "one hundred ninety-five million, six hundred sixty-three thousand, four hundred forty-three".