1928327767187 has 2 divisors, whose sum is σ = 1928327767188. Its totient is φ = 1928327767186.

The previous prime is 1928327767139. The next prime is 1928327767189. The reversal of 1928327767187 is 7817677238291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1928327767187 - 2¹² = 1928327763091 is a prime.

Together with 1928327767189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1928327767189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964163883593 + 964163883594.

It is an arithmetic number, because the mean of its divisors is an integer number (964163883594).

Almost surely, 2^{1928327767187} is an apocalyptic number.

1928327767187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928327767187 is an equidigital number, since it uses as much as digits as its factorization.

1928327767187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99574272, while the sum is 68.

The spelling of 1928327767187 in words is "one trillion, nine hundred twenty-eight billion, three hundred twenty-seven million, seven hundred sixty-seven thousand, one hundred eighty-seven".