195900073 has 2 divisors, whose sum is σ = 195900074. Its totient is φ = 195900072.

The previous prime is 195900071. The next prime is 195900121. The reversal of 195900073 is 370009591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132411049 + 63489024 = 11507^2 + 7968^2 .

It is a cyclic number.

It is not a de Polignac number, because 195900073 - 2¹ = 195900071 is a prime.

Together with 195900071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (195900071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97950036 + 97950037.

It is an arithmetic number, because the mean of its divisors is an integer number (97950037).

Almost surely, 2^195900073 is an apocalyptic number.

It is an amenable number.

195900073 is a deficient number, since it is larger than the sum of its proper divisors (1).

195900073 is an equidigital number, since it uses as much as digits as its factorization.

195900073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 195900073 is about 13996.4307235809. The cubic root of 195900073 is about 580.7798398182.

The spelling of 195900073 in words is "one hundred ninety-five million, nine hundred thousand, seventy-three".