195761893 has 2 divisors, whose sum is σ = 195761894. Its totient is φ = 195761892.

The previous prime is 195761833. The next prime is 195761897. The reversal of 195761893 is 398167591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118004769 + 77757124 = 10863^2 + 8818^2 .

It is a cyclic number.

It is not a de Polignac number, because 195761893 - 2²¹ = 193664741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195761897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97880946 + 97880947.

It is an arithmetic number, because the mean of its divisors is an integer number (97880947).

Almost surely, 2^195761893 is an apocalyptic number.

It is an amenable number.

195761893 is a deficient number, since it is larger than the sum of its proper divisors (1).

195761893 is an equidigital number, since it uses as much as digits as its factorization.

195761893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 49.

The square root of 195761893 is about 13991.4935943237. The cubic root of 195761893 is about 580.6432548179.

The spelling of 195761893 in words is "one hundred ninety-five million, seven hundred sixty-one thousand, eight hundred ninety-three".