18442882229 has 4 divisors (see below), whose sum is σ = 18494255520. Its totient is φ = 18391508940.

The previous prime is 18442882223. The next prime is 18442882261. The reversal of 18442882229 is 92228824481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18442882229 - 2²⁰ = 18441833653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18442882223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25686107 + ... + 25686824.

It is an arithmetic number, because the mean of its divisors is an integer number (4623563880).

Almost surely, 2^18442882229 is an apocalyptic number.

It is an amenable number.

18442882229 is a deficient number, since it is larger than the sum of its proper divisors (51373291).

18442882229 is an equidigital number, since it uses as much as digits as its factorization.

18442882229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51373290.

The product of its digits is 1179648, while the sum is 50.

The spelling of 18442882229 in words is "eighteen billion, four hundred forty-two million, eight hundred eighty-two thousand, two hundred twenty-nine".