195192971 has 2 divisors, whose sum is σ = 195192972. Its totient is φ = 195192970.

The previous prime is 195192941. The next prime is 195193007. The reversal of 195192971 is 179291591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195192971 - 2¹⁰ = 195191947 is a prime.

It is not a weakly prime, because it can be changed into another prime (195192901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97596485 + 97596486.

It is an arithmetic number, because the mean of its divisors is an integer number (97596486).

Almost surely, 2^195192971 is an apocalyptic number.

195192971 is a deficient number, since it is larger than the sum of its proper divisors (1).

195192971 is an equidigital number, since it uses as much as digits as its factorization.

195192971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 44.

The square root of 195192971 is about 13971.1478053881. The cubic root of 195192971 is about 580.0802217615.

The spelling of 195192971 in words is "one hundred ninety-five million, one hundred ninety-two thousand, nine hundred seventy-one".