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195366121 is a prime number
BaseRepresentation
bin10111010010100…
…00110011101001
3111121121121221021
423221100303221
5400003203441
631215212441
74561404346
oct1351206351
9447547837
10195366121
11a0308505
1255517121
1331624072
141bd377cd
15122413d1
hexba50ce9

195366121 has 2 divisors, whose sum is σ = 195366122. Its totient is φ = 195366120.

The previous prime is 195366097. The next prime is 195366137. The reversal of 195366121 is 121663591.

195366121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147962896 + 47403225 = 12164^2 + 6885^2 .

It is a cyclic number.

It is not a de Polignac number, because 195366121 - 27 = 195365993 is a prime.

It is equal to p10836628 and since 195366121 and 10836628 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (195366191) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97683060 + 97683061.

It is an arithmetic number, because the mean of its divisors is an integer number (97683061).

Almost surely, 2195366121 is an apocalyptic number.

It is an amenable number.

195366121 is a deficient number, since it is larger than the sum of its proper divisors (1).

195366121 is an equidigital number, since it uses as much as digits as its factorization.

195366121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 195366121 is about 13977.3431309387. The cubic root of 195366121 is about 580.2516951588.

The spelling of 195366121 in words is "one hundred ninety-five million, three hundred sixty-six thousand, one hundred twenty-one".