1955198017303 has 2 divisors, whose sum is σ = 1955198017304. Its totient is φ = 1955198017302.

The previous prime is 1955198017249. The next prime is 1955198017307. The reversal of 1955198017303 is 3037108915591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1955198017303 - 2²⁹ = 1954661146391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1955198017307) 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, 977599008651 + 977599008652.

It is an arithmetic number, because the mean of its divisors is an integer number (977599008652).

Almost surely, 2^{1955198017303} is an apocalyptic number.

1955198017303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955198017303 is an equidigital number, since it uses as much as digits as its factorization.

1955198017303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 52.

The spelling of 1955198017303 in words is "one trillion, nine hundred fifty-five billion, one hundred ninety-eight million, seventeen thousand, three hundred three".