1828194927491 has 2 divisors, whose sum is σ = 1828194927492. Its totient is φ = 1828194927490.

The previous prime is 1828194927487. The next prime is 1828194927557. The reversal of 1828194927491 is 1947294918281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1828194927491 - 2² = 1828194927487 is a prime.

It is not a weakly prime, because it can be changed into another prime (1828194927191) 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, 914097463745 + 914097463746.

It is an arithmetic number, because the mean of its divisors is an integer number (914097463746).

Almost surely, 2^{1828194927491} is an apocalyptic number.

1828194927491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1828194927491 is an equidigital number, since it uses as much as digits as its factorization.

1828194927491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 65.

The spelling of 1828194927491 in words is "one trillion, eight hundred twenty-eight billion, one hundred ninety-four million, nine hundred twenty-seven thousand, four hundred ninety-one".