18867340219 has 16 divisors (see below), whose sum is σ = 23225856192. Its totient is φ = 14925103488.

The previous prime is 18867340213. The next prime is 18867340267. The reversal of 18867340219 is 91204376881.

It is a cyclic number.

It is not a de Polignac number, because 18867340219 - 2¹³ = 18867332027 is a prime.

It is a super-2 number, since 2×18867340219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18867340213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533697 + ... + 567949.

It is an arithmetic number, because the mean of its divisors is an integer number (1451616012).

Almost surely, 2^18867340219 is an apocalyptic number.

18867340219 is a deficient number, since it is larger than the sum of its proper divisors (4358515973).

18867340219 is a wasteful number, since it uses less digits than its factorization.

18867340219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40326.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 18867340219 in words is "eighteen billion, eight hundred sixty-seven million, three hundred forty thousand, two hundred nineteen".