195963253 has 2 divisors, whose sum is σ = 195963254. Its totient is φ = 195963252.

The previous prime is 195963241. The next prime is 195963259. The reversal of 195963253 is 352369591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187772209 + 8191044 = 13703^2 + 2862^2 .

It is a cyclic number.

It is not a de Polignac number, because 195963253 - 2²⁵ = 162408821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195963259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97981626 + 97981627.

It is an arithmetic number, because the mean of its divisors is an integer number (97981627).

Almost surely, 2^195963253 is an apocalyptic number.

It is an amenable number.

195963253 is a deficient number, since it is larger than the sum of its proper divisors (1).

195963253 is an equidigital number, since it uses as much as digits as its factorization.

195963253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 218700, while the sum is 43.

The square root of 195963253 is about 13998.6875456237. The cubic root of 195963253 is about 580.8422691403.

The spelling of 195963253 in words is "one hundred ninety-five million, nine hundred sixty-three thousand, two hundred fifty-three".