195318481 has 2 divisors, whose sum is σ = 195318482. Its totient is φ = 195318480.

The previous prime is 195318463. The next prime is 195318503. The reversal of 195318481 is 184813591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186076881 + 9241600 = 13641^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 195318481 - 2¹³ = 195310289 is a prime.

It is a super-2 number, since 2×195318481² = 76298618040294722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195315481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97659240 + 97659241.

It is an arithmetic number, because the mean of its divisors is an integer number (97659241).

Almost surely, 2^195318481 is an apocalyptic number.

It is an amenable number.

195318481 is a deficient number, since it is larger than the sum of its proper divisors (1).

195318481 is an equidigital number, since it uses as much as digits as its factorization.

195318481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 40.

The square root of 195318481 is about 13975.6388404967. The cubic root of 195318481 is about 580.2045265609.

The spelling of 195318481 in words is "one hundred ninety-five million, three hundred eighteen thousand, four hundred eighty-one".