195828911 has 2 divisors, whose sum is σ = 195828912. Its totient is φ = 195828910.

The previous prime is 195828883. The next prime is 195828917. The reversal of 195828911 is 119828591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195828911 - 2¹⁰ = 195827887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195828917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97914455 + 97914456.

It is an arithmetic number, because the mean of its divisors is an integer number (97914456).

Almost surely, 2^195828911 is an apocalyptic number.

195828911 is a deficient number, since it is larger than the sum of its proper divisors (1).

195828911 is an equidigital number, since it uses as much as digits as its factorization.

195828911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 44.

The square root of 195828911 is about 13993.8883445596. Note that the first 3 decimals coincide. The cubic root of 195828911 is about 580.7095072591.

The spelling of 195828911 in words is "one hundred ninety-five million, eight hundred twenty-eight thousand, nine hundred eleven".