1999893375827 has 2 divisors, whose sum is σ = 1999893375828. Its totient is φ = 1999893375826.

The previous prime is 1999893375629. The next prime is 1999893375829. The reversal of 1999893375827 is 7285733989991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1999893375827 - 2²² = 1999889181523 is a prime.

Together with 1999893375829, 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 (1999893375829) 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, 999946687913 + 999946687914.

It is an arithmetic number, because the mean of its divisors is an integer number (999946687914).

Almost surely, 2^{1999893375827} is an apocalyptic number.

1999893375827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999893375827 is an equidigital number, since it uses as much as digits as its factorization.

1999893375827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1851776640, while the sum is 80.

The spelling of 1999893375827 in words is "one trillion, nine hundred ninety-nine billion, eight hundred ninety-three million, three hundred seventy-five thousand, eight hundred twenty-seven".