18229618227 has 8 divisors (see below), whose sum is σ = 24497545216. Its totient is φ = 12057385032.

The previous prime is 18229618223. The next prime is 18229618237. The reversal of 18229618227 is 72281692281.

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

It is not a de Polignac number, because 18229618227 - 2² = 18229618223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18229618223) 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, 23923003 + ... + 23923764.

It is an arithmetic number, because the mean of its divisors is an integer number (3062193152).

Almost surely, 2^18229618227 is an apocalyptic number.

18229618227 is a deficient number, since it is larger than the sum of its proper divisors (6267926989).

18229618227 is a wasteful number, since it uses less digits than its factorization.

18229618227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47846897.

The product of its digits is 387072, while the sum is 48.

The spelling of 18229618227 in words is "eighteen billion, two hundred twenty-nine million, six hundred eighteen thousand, two hundred twenty-seven".