195803653 has 2 divisors, whose sum is σ = 195803654. Its totient is φ = 195803652.

The previous prime is 195803627. The next prime is 195803689. The reversal of 195803653 is 356308591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130484929 + 65318724 = 11423^2 + 8082^2 .

It is a cyclic number.

It is not a de Polignac number, because 195803653 - 2⁹ = 195803141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195803693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97901826 + 97901827.

It is an arithmetic number, because the mean of its divisors is an integer number (97901827).

Almost surely, 2^195803653 is an apocalyptic number.

It is an amenable number.

195803653 is a deficient number, since it is larger than the sum of its proper divisors (1).

195803653 is an equidigital number, since it uses as much as digits as its factorization.

195803653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 195803653 is about 13992.9858500607. The cubic root of 195803653 is about 580.6845395610.

The spelling of 195803653 in words is "one hundred ninety-five million, eight hundred three thousand, six hundred fifty-three".