197074662091 has 2 divisors, whose sum is σ = 197074662092. Its totient is φ = 197074662090.

The previous prime is 197074662073. The next prime is 197074662119. The reversal of 197074662091 is 190266470791.

197074662091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197074662091 - 2¹⁷ = 197074531019 is a prime.

It is not a weakly prime, because it can be changed into another prime (197074660091) 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, 98537331045 + 98537331046.

It is an arithmetic number, because the mean of its divisors is an integer number (98537331046).

Almost surely, 2^197074662091 is an apocalyptic number.

197074662091 is a deficient number, since it is larger than the sum of its proper divisors (1).

197074662091 is an equidigital number, since it uses as much as digits as its factorization.

197074662091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 197074662091 in words is "one hundred ninety-seven billion, seventy-four million, six hundred sixty-two thousand, ninety-one".