195049937 has 2 divisors, whose sum is σ = 195049938. Its totient is φ = 195049936.

The previous prime is 195049909. The next prime is 195049949. The reversal of 195049937 is 739940591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117592336 + 77457601 = 10844^2 + 8801^2 .

It is a cyclic number.

It is not a de Polignac number, because 195049937 - 2⁶ = 195049873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195049891 and 195049900.

It is not a weakly prime, because it can be changed into another prime (195049837) 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, 97524968 + 97524969.

It is an arithmetic number, because the mean of its divisors is an integer number (97524969).

Almost surely, 2^195049937 is an apocalyptic number.

It is an amenable number.

195049937 is a deficient number, since it is larger than the sum of its proper divisors (1).

195049937 is an equidigital number, since it uses as much as digits as its factorization.

195049937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 195049937 is about 13966.0279607339. The cubic root of 195049937 is about 579.9384962528.

The spelling of 195049937 in words is "one hundred ninety-five million, forty-nine thousand, nine hundred thirty-seven".