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195091447 is a prime number
BaseRepresentation
bin10111010000011…
…01101111110111
3111121002200011011
423220031233313
5344420411242
631205253051
74556151505
oct1350155767
9447080134
10195091447
11a0140101
1255404187
1331559035
141bca5675
15121d9d17
hexba0dbf7

195091447 has 2 divisors, whose sum is σ = 195091448. Its totient is φ = 195091446.

The previous prime is 195091433. The next prime is 195091453. The reversal of 195091447 is 744190591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195091447 - 27 = 195091319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195091147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97545723 + 97545724.

It is an arithmetic number, because the mean of its divisors is an integer number (97545724).

Almost surely, 2195091447 is an apocalyptic number.

195091447 is a deficient number, since it is larger than the sum of its proper divisors (1).

195091447 is an equidigital number, since it uses as much as digits as its factorization.

195091447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 195091447 is about 13967.5139878219. The cubic root of 195091447 is about 579.9796336487.

The spelling of 195091447 in words is "one hundred ninety-five million, ninety-one thousand, four hundred forty-seven".