195494801 has 2 divisors, whose sum is σ = 195494802. Its totient is φ = 195494800.

The previous prime is 195494777. The next prime is 195494809. The reversal of 195494801 is 108494591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165508225 + 29986576 = 12865^2 + 5476^2 .

It is an emirp because it is prime and its reverse (108494591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195494801 - 2¹⁰ = 195493777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (195494809) 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, 97747400 + 97747401.

It is an arithmetic number, because the mean of its divisors is an integer number (97747401).

Almost surely, 2^195494801 is an apocalyptic number.

It is an amenable number.

195494801 is a deficient number, since it is larger than the sum of its proper divisors (1).

195494801 is an equidigital number, since it uses as much as digits as its factorization.

195494801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 195494801 is about 13981.9455370131. The cubic root of 195494801 is about 580.3790635418.

The spelling of 195494801 in words is "one hundred ninety-five million, four hundred ninety-four thousand, eight hundred one".