191480797 has 2 divisors, whose sum is σ = 191480798. Its totient is φ = 191480796.

The previous prime is 191480789. The next prime is 191480833. The reversal of 191480797 is 797084191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185667876 + 5812921 = 13626^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 191480797 - 2³ = 191480789 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 (191480717) 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, 95740398 + 95740399.

It is an arithmetic number, because the mean of its divisors is an integer number (95740399).

Almost surely, 2^191480797 is an apocalyptic number.

It is an amenable number.

191480797 is a deficient number, since it is larger than the sum of its proper divisors (1).

191480797 is an equidigital number, since it uses as much as digits as its factorization.

191480797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 191480797 is about 13837.6586531104. The cubic root of 191480797 is about 576.3793445801.

The spelling of 191480797 in words is "one hundred ninety-one million, four hundred eighty thousand, seven hundred ninety-seven".