18732312211 has 16 divisors (see below), whose sum is σ = 20581827840. Its totient is φ = 16969629600.

The previous prime is 18732312199. The next prime is 18732312217. The reversal of 18732312211 is 11221323781.

It is not a de Polignac number, because 18732312211 - 2⁷ = 18732312083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18732312217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2750136 + ... + 2756938.

It is an arithmetic number, because the mean of its divisors is an integer number (1286364240).

Almost surely, 2^18732312211 is an apocalyptic number.

18732312211 is a deficient number, since it is larger than the sum of its proper divisors (1849515629).

18732312211 is a wasteful number, since it uses less digits than its factorization.

18732312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13146.

The product of its digits is 4032, while the sum is 31.

Adding to 18732312211 its reverse (11221323781), we get a palindrome (29953635992).

The spelling of 18732312211 in words is "eighteen billion, seven hundred thirty-two million, three hundred twelve thousand, two hundred eleven".