16185478427 has 2 divisors, whose sum is σ = 16185478428. Its totient is φ = 16185478426.

The previous prime is 16185478333. The next prime is 16185478481. The reversal of 16185478427 is 72487458161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16185478427 - 2¹⁰ = 16185477403 is a prime.

It is not a weakly prime, because it can be changed into another prime (16185478487) 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, 8092739213 + 8092739214.

It is an arithmetic number, because the mean of its divisors is an integer number (8092739214).

Almost surely, 2^16185478427 is an apocalyptic number.

16185478427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16185478427 is an equidigital number, since it uses as much as digits as its factorization.

16185478427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3010560, while the sum is 53.

The spelling of 16185478427 in words is "sixteen billion, one hundred eighty-five million, four hundred seventy-eight thousand, four hundred twenty-seven".