3278394438197 has 2 divisors, whose sum is σ = 3278394438198. Its totient is φ = 3278394438196.

The previous prime is 3278394438161. The next prime is 3278394438223. The reversal of 3278394438197 is 7918344938723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2820219781201 + 458174656996 = 1679351^2 + 676886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3278394438197 is a prime.

It is a super-2 number, since 2×3278394438197² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3278394488197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1639197219098 + 1639197219099.

It is an arithmetic number, because the mean of its divisors is an integer number (1639197219099).

Almost surely, 2^{3278394438197} is an apocalyptic number.

It is an amenable number.

3278394438197 is a deficient number, since it is larger than the sum of its proper divisors (1).

3278394438197 is an equidigital number, since it uses as much as digits as its factorization.

3278394438197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219469824, while the sum is 68.

The spelling of 3278394438197 in words is "three trillion, two hundred seventy-eight billion, three hundred ninety-four million, four hundred thirty-eight thousand, one hundred ninety-seven".