2197843703669 has 2 divisors, whose sum is σ = 2197843703670. Its totient is φ = 2197843703668.

The previous prime is 2197843703663. The next prime is 2197843703681. The reversal of 2197843703669 is 9663073487912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2040026607025 + 157817096644 = 1428295^2 + 397262^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197843703669 - 2²⁰ = 2197842655093 is a prime.

It is a super-2 number, since 2×2197843703669² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2197843703663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098921851834 + 1098921851835.

It is an arithmetic number, because the mean of its divisors is an integer number (1098921851835).

Almost surely, 2^{2197843703669} is an apocalyptic number.

It is an amenable number.

2197843703669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197843703669 is an equidigital number, since it uses as much as digits as its factorization.

2197843703669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82301184, while the sum is 65.

The spelling of 2197843703669 in words is "two trillion, one hundred ninety-seven billion, eight hundred forty-three million, seven hundred three thousand, six hundred sixty-nine".