197018419601 has 2 divisors, whose sum is σ = 197018419602. Its totient is φ = 197018419600.

The previous prime is 197018419571. The next prime is 197018419607. The reversal of 197018419601 is 106914810791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131033140225 + 65985279376 = 361985^2 + 256876^2 .

It is an emirp because it is prime and its reverse (106914810791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197018419601 - 2³⁴ = 179838550417 is a prime.

It is not a weakly prime, because it can be changed into another prime (197018419607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98509209800 + 98509209801.

It is an arithmetic number, because the mean of its divisors is an integer number (98509209801).

Almost surely, 2^197018419601 is an apocalyptic number.

It is an amenable number.

197018419601 is a deficient number, since it is larger than the sum of its proper divisors (1).

197018419601 is an equidigital number, since it uses as much as digits as its factorization.

197018419601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 47.

The spelling of 197018419601 in words is "one hundred ninety-seven billion, eighteen million, four hundred nineteen thousand, six hundred one".