18348368827 has 2 divisors, whose sum is σ = 18348368828.
Its totient is φ = 18348368826.
The previous prime is 18348368789. The next prime is 18348368833. The reversal of 18348368827 is 72886384381.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 18348368827 - 27 = 18348368699 is a prime.
It is a super-2 number, since 2×183483688272 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (18348368627) 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, 9174184413 + 9174184414.
It is an arithmetic number, because the mean of its divisors is an integer number (9174184414).
Almost surely, 218348368827 is an apocalyptic number.
18348368827 is a deficient number, since it is larger than the sum of its proper divisors (1).
18348368827 is an equidigital number, since it uses as much as digits as its factorization.
18348368827 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 12386304, while the sum is 58.
The spelling of 18348368827 in words is "eighteen billion, three hundred forty-eight million, three hundred sixty-eight thousand, eight hundred twenty-seven".