197788948198379 has 2 divisors, whose sum is σ = 197788948198380. Its totient is φ = 197788948198378.

The previous prime is 197788948198337. The next prime is 197788948198397. The reversal of 197788948198379 is 973891849887791.

Together with next prime (197788948198397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197788948198379 - 2²⁸ = 197788679762923 is a prime.

It is not a weakly prime, because it can be changed into another prime (197788948198319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98894474099189 + 98894474099190.

It is an arithmetic number, because the mean of its divisors is an integer number (98894474099190).

Almost surely, 2^{197788948198379} is an apocalyptic number.

197788948198379 is a deficient number, since it is larger than the sum of its proper divisors (1).

197788948198379 is an equidigital number, since it uses as much as digits as its factorization.

197788948198379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110612791296, while the sum is 98.

The spelling of 197788948198379 in words is "one hundred ninety-seven trillion, seven hundred eighty-eight billion, nine hundred forty-eight million, one hundred ninety-eight thousand, three hundred seventy-nine".