18546481627 has 2 divisors, whose sum is σ = 18546481628. Its totient is φ = 18546481626.

The previous prime is 18546481589. The next prime is 18546481633. The reversal of 18546481627 is 72618464581.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18546481627 is a prime.

It is not a weakly prime, because it can be changed into another prime (18546481637) 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, 9273240813 + 9273240814.

It is an arithmetic number, because the mean of its divisors is an integer number (9273240814).

Almost surely, 2^18546481627 is an apocalyptic number.

18546481627 is a deficient number, since it is larger than the sum of its proper divisors (1).

18546481627 is an equidigital number, since it uses as much as digits as its factorization.

18546481627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 52.

The spelling of 18546481627 in words is "eighteen billion, five hundred forty-six million, four hundred eighty-one thousand, six hundred twenty-seven".