195738757 has 2 divisors, whose sum is σ = 195738758. Its totient is φ = 195738756.

The previous prime is 195738749. The next prime is 195738761. The reversal of 195738757 is 757837591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167159041 + 28579716 = 12929^2 + 5346^2 .

It is a cyclic number.

It is not a de Polignac number, because 195738757 - 2³ = 195738749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195738727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97869378 + 97869379.

It is an arithmetic number, because the mean of its divisors is an integer number (97869379).

Almost surely, 2^195738757 is an apocalyptic number.

It is an amenable number.

195738757 is a deficient number, since it is larger than the sum of its proper divisors (1).

195738757 is an equidigital number, since it uses as much as digits as its factorization.

195738757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1852200, while the sum is 52.

The square root of 195738757 is about 13990.6667818228. Note that the first 3 decimals coincide. The cubic root of 195738757 is about 580.6203795937.

The spelling of 195738757 in words is "one hundred ninety-five million, seven hundred thirty-eight thousand, seven hundred fifty-seven".