3519980672869 has 2 divisors, whose sum is σ = 3519980672870. Its totient is φ = 3519980672868.

The previous prime is 3519980672867. The next prime is 3519980672909. The reversal of 3519980672869 is 9682760899153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3024948820644 + 495031852225 = 1739238^2 + 703585^2 .

It is a cyclic number.

It is not a de Polignac number, because 3519980672869 - 2¹ = 3519980672867 is a prime.

It is a super-2 number, since 2×3519980672869² (a number of 26 digits) contains 22 as substring.

Together with 3519980672867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3519980672867) 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, 1759990336434 + 1759990336435.

It is an arithmetic number, because the mean of its divisors is an integer number (1759990336435).

Almost surely, 2^{3519980672869} is an apocalyptic number.

It is an amenable number.

3519980672869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3519980672869 is an equidigital number, since it uses as much as digits as its factorization.

3519980672869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352719360, while the sum is 73.

The spelling of 3519980672869 in words is "three trillion, five hundred nineteen billion, nine hundred eighty million, six hundred seventy-two thousand, eight hundred sixty-nine".