1928771571241 has 2 divisors, whose sum is σ = 1928771571242. Its totient is φ = 1928771571240.

The previous prime is 1928771571193. The next prime is 1928771571253. The reversal of 1928771571241 is 1421751778291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1876694505625 + 52077065616 = 1369925^2 + 228204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928771571241 - 2⁹ = 1928771570729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1928771572241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964385785620 + 964385785621.

It is an arithmetic number, because the mean of its divisors is an integer number (964385785621).

Almost surely, 2^{1928771571241} is an apocalyptic number.

It is an amenable number.

1928771571241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928771571241 is an equidigital number, since it uses as much as digits as its factorization.

1928771571241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 55.

The spelling of 1928771571241 in words is "one trillion, nine hundred twenty-eight billion, seven hundred seventy-one million, five hundred seventy-one thousand, two hundred forty-one".