195211967 has 2 divisors, whose sum is σ = 195211968. Its totient is φ = 195211966.

The previous prime is 195211957. The next prime is 195211993. The reversal of 195211967 is 769112591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195211967 - 2¹⁶ = 195146431 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195211957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97605983 + 97605984.

It is an arithmetic number, because the mean of its divisors is an integer number (97605984).

Almost surely, 2^195211967 is an apocalyptic number.

195211967 is a deficient number, since it is larger than the sum of its proper divisors (1).

195211967 is an equidigital number, since it uses as much as digits as its factorization.

195211967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 41.

The square root of 195211967 is about 13971.8276184614. The cubic root of 195211967 is about 580.0990387752.

The spelling of 195211967 in words is "one hundred ninety-five million, two hundred eleven thousand, nine hundred sixty-seven".