1908197817343 has 2 divisors, whose sum is σ = 1908197817344. Its totient is φ = 1908197817342.

The previous prime is 1908197817301. The next prime is 1908197817419. The reversal of 1908197817343 is 3437187918091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1908197817343 - 2⁹ = 1908197816831 is a prime.

It is a super-2 number, since 2×1908197817343² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1908197847343) 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, 954098908671 + 954098908672.

It is an arithmetic number, because the mean of its divisors is an integer number (954098908672).

Almost surely, 2^{1908197817343} is an apocalyptic number.

1908197817343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1908197817343 is an equidigital number, since it uses as much as digits as its factorization.

1908197817343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The spelling of 1908197817343 in words is "one trillion, nine hundred eight billion, one hundred ninety-seven million, eight hundred seventeen thousand, three hundred forty-three".