273898340369 has 2 divisors, whose sum is σ = 273898340370. Its totient is φ = 273898340368.

The previous prime is 273898340327. The next prime is 273898340449. The reversal of 273898340369 is 963043898372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235094068225 + 38804272144 = 484865^2 + 196988^2 .

It is a cyclic number.

It is not a de Polignac number, because 273898340369 - 2⁸ = 273898340113 is a prime.

It is a super-2 number, since 2×273898340369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (273898340069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136949170184 + 136949170185.

It is an arithmetic number, because the mean of its divisors is an integer number (136949170185).

Almost surely, 2^273898340369 is an apocalyptic number.

It is an amenable number.

273898340369 is a deficient number, since it is larger than the sum of its proper divisors (1).

273898340369 is an equidigital number, since it uses as much as digits as its factorization.

273898340369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47029248, while the sum is 62.

The spelling of 273898340369 in words is "two hundred seventy-three billion, eight hundred ninety-eight million, three hundred forty thousand, three hundred sixty-nine".