197938658833 has 2 divisors, whose sum is σ = 197938658834. Its totient is φ = 197938658832.

The previous prime is 197938658807. The next prime is 197938658849. The reversal of 197938658833 is 338856839791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181154938129 + 16783720704 = 425623^2 + 129552^2 .

It is a cyclic number.

It is not a de Polignac number, because 197938658833 - 2³³ = 189348724241 is a prime.

It is not a weakly prime, because it can be changed into another prime (197938658893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98969329416 + 98969329417.

It is an arithmetic number, because the mean of its divisors is an integer number (98969329417).

Almost surely, 2^197938658833 is an apocalyptic number.

It is an amenable number.

197938658833 is a deficient number, since it is larger than the sum of its proper divisors (1).

197938658833 is an equidigital number, since it uses as much as digits as its factorization.

197938658833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 70.

The spelling of 197938658833 in words is "one hundred ninety-seven billion, nine hundred thirty-eight million, six hundred fifty-eight thousand, eight hundred thirty-three".