3198961755989 has 2 divisors, whose sum is σ = 3198961755990. Its totient is φ = 3198961755988.

The previous prime is 3198961755953. The next prime is 3198961755991. The reversal of 3198961755989 is 9895571698913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3197541219889 + 1420536100 = 1788167^2 + 37690^2 .

It is a cyclic number.

It is not a de Polignac number, because 3198961755989 - 2⁸ = 3198961755733 is a prime.

Together with 3198961755991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3198961755919) 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, 1599480877994 + 1599480877995.

It is an arithmetic number, because the mean of its divisors is an integer number (1599480877995).

Almost surely, 2^{3198961755989} is an apocalyptic number.

It is an amenable number.

3198961755989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3198961755989 is an equidigital number, since it uses as much as digits as its factorization.

3198961755989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1322697600, while the sum is 80.

The spelling of 3198961755989 in words is "three trillion, one hundred ninety-eight billion, nine hundred sixty-one million, seven hundred fifty-five thousand, nine hundred eighty-nine".