195516143 has 2 divisors, whose sum is σ = 195516144. Its totient is φ = 195516142.

The previous prime is 195516127. The next prime is 195516203. The reversal of 195516143 is 341615591.

It is a weak prime.

It is an emirp because it is prime and its reverse (341615591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195516143 - 2⁴ = 195516127 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195516043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97758071 + 97758072.

It is an arithmetic number, because the mean of its divisors is an integer number (97758072).

Almost surely, 2^195516143 is an apocalyptic number.

195516143 is a deficient number, since it is larger than the sum of its proper divisors (1).

195516143 is an equidigital number, since it uses as much as digits as its factorization.

195516143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 195516143 is about 13982.7087146947. The cubic root of 195516143 is about 580.4001826017.

The spelling of 195516143 in words is "one hundred ninety-five million, five hundred sixteen thousand, one hundred forty-three".