18226447233 has 8 divisors (see below), whose sum is σ = 24303758688. Its totient is φ = 12150050304.

The previous prime is 18226447219. The next prime is 18226447247. The reversal of 18226447233 is 33274462281.

It is an interprime number because it is at equal distance from previous prime (18226447219) and next prime (18226447247).

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

It is not a de Polignac number, because 18226447233 - 2¹⁶ = 18226381697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18226449233) 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, 180691 + ... + 262872.

It is an arithmetic number, because the mean of its divisors is an integer number (3037969836).

Almost surely, 2^18226447233 is an apocalyptic number.

It is an amenable number.

18226447233 is a deficient number, since it is larger than the sum of its proper divisors (6077311455).

18226447233 is a wasteful number, since it uses less digits than its factorization.

18226447233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457263.

The product of its digits is 387072, while the sum is 42.

The spelling of 18226447233 in words is "eighteen billion, two hundred twenty-six million, four hundred forty-seven thousand, two hundred thirty-three".