195353663 has 2 divisors, whose sum is σ = 195353664. Its totient is φ = 195353662.

The previous prime is 195353633. The next prime is 195353689. The reversal of 195353663 is 366353591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195353663 - 2⁸ = 195353407 is a prime.

It is equal to p_10835969 and since 195353663 and 10835969 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195353663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195353603) 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 as a sum of consecutive naturals, namely, 97676831 + 97676832.

It is an arithmetic number, because the mean of its divisors is an integer number (97676832).

Almost surely, 2^195353663 is an apocalyptic number.

195353663 is a deficient number, since it is larger than the sum of its proper divisors (1).

195353663 is an equidigital number, since it uses as much as digits as its factorization.

195353663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 41.

The square root of 195353663 is about 13976.8974740462. The cubic root of 195353663 is about 580.2393611723.

The spelling of 195353663 in words is "one hundred ninety-five million, three hundred fifty-three thousand, six hundred sixty-three".