1897140726941 has 2 divisors, whose sum is σ = 1897140726942. Its totient is φ = 1897140726940.

The previous prime is 1897140726931. The next prime is 1897140727003. The reversal of 1897140726941 is 1496270417981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1822105821316 + 75034905625 = 1349854^2 + 273925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1897140726941 - 2¹⁸ = 1897140464797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1897140726931) 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, 948570363470 + 948570363471.

It is an arithmetic number, because the mean of its divisors is an integer number (948570363471).

Almost surely, 2^{1897140726941} is an apocalyptic number.

It is an amenable number.

1897140726941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897140726941 is an equidigital number, since it uses as much as digits as its factorization.

1897140726941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 1897140726941 in words is "one trillion, eight hundred ninety-seven billion, one hundred forty million, seven hundred twenty-six thousand, nine hundred forty-one".