18546046867 has 2 divisors, whose sum is σ = 18546046868. Its totient is φ = 18546046866.

The previous prime is 18546046829. The next prime is 18546046877. The reversal of 18546046867 is 76864064581.

It is a strong prime.

It is an emirp because it is prime and its reverse (76864064581) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18546046867 is a prime.

It is not a weakly prime, because it can be changed into another prime (18546046877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9273023433 + 9273023434.

It is an arithmetic number, because the mean of its divisors is an integer number (9273023434).

Almost surely, 2^18546046867 is an apocalyptic number.

18546046867 is a deficient number, since it is larger than the sum of its proper divisors (1).

18546046867 is an equidigital number, since it uses as much as digits as its factorization.

18546046867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 18546046867 in words is "eighteen billion, five hundred forty-six million, forty-six thousand, eight hundred sixty-seven".