197840681086219 has 2 divisors, whose sum is σ = 197840681086220. Its totient is φ = 197840681086218.

The previous prime is 197840681086199. The next prime is 197840681086277. The reversal of 197840681086219 is 912680186048791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197840681086219 - 2¹¹ = 197840681084171 is a prime.

It is a super-2 number, since 2×197840681086219² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197840681086819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98920340543109 + 98920340543110.

It is an arithmetic number, because the mean of its divisors is an integer number (98920340543110).

Almost surely, 2^{197840681086219} is an apocalyptic number.

197840681086219 is a deficient number, since it is larger than the sum of its proper divisors (1).

197840681086219 is an equidigital number, since it uses as much as digits as its factorization.

197840681086219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83607552, while the sum is 70.

The spelling of 197840681086219 in words is "one hundred ninety-seven trillion, eight hundred forty billion, six hundred eighty-one million, eighty-six thousand, two hundred nineteen".