18242221911 has 8 divisors (see below), whose sum is σ = 24323934720. Its totient is φ = 12160995192.

The previous prime is 18242221883. The next prime is 18242221919. The reversal of 18242221911 is 11912224281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18242221911 - 2²² = 18238027607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18242221919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22405 + ... + 192318.

It is an arithmetic number, because the mean of its divisors is an integer number (3040491840).

Almost surely, 2^18242221911 is an apocalyptic number.

18242221911 is a deficient number, since it is larger than the sum of its proper divisors (6081712809).

18242221911 is a wasteful number, since it uses less digits than its factorization.

18242221911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243045.

The product of its digits is 4608, while the sum is 33.

The spelling of 18242221911 in words is "eighteen billion, two hundred forty-two million, two hundred twenty-one thousand, nine hundred eleven".