18539484211 has 12 divisors (see below), whose sum is σ = 19209061872. Its totient is φ = 17892510944.

The previous prime is 18539484209. The next prime is 18539484241. The reversal of 18539484211 is 11248493581.

It is not a de Polignac number, because 18539484211 - 2¹ = 18539484209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18539484241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3493386 + ... + 3498688.

It is an arithmetic number, because the mean of its divisors is an integer number (1600755156).

Almost surely, 2^18539484211 is an apocalyptic number.

18539484211 is a deficient number, since it is larger than the sum of its proper divisors (669577661).

18539484211 is an equidigital number, since it uses as much as digits as its factorization.

18539484211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518 (or 9489 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The spelling of 18539484211 in words is "eighteen billion, five hundred thirty-nine million, four hundred eighty-four thousand, two hundred eleven".