1955198017351 has 2 divisors, whose sum is σ = 1955198017352. Its totient is φ = 1955198017350.

The previous prime is 1955198017349. The next prime is 1955198017379. The reversal of 1955198017351 is 1537108915591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1955198017351 - 2¹ = 1955198017349 is a prime.

Together with 1955198017349, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1955198017292 and 1955198017301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1955198017321) 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, 977599008675 + 977599008676.

It is an arithmetic number, because the mean of its divisors is an integer number (977599008676).

Almost surely, 2^{1955198017351} is an apocalyptic number.

1955198017351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955198017351 is an equidigital number, since it uses as much as digits as its factorization.

1955198017351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701000, while the sum is 55.

The spelling of 1955198017351 in words is "one trillion, nine hundred fifty-five billion, one hundred ninety-eight million, seventeen thousand, three hundred fifty-one".