18882229 has 4 divisors (see below), whose sum is σ = 18897984. Its totient is φ = 18866476.

The previous prime is 18882221. The next prime is 18882293. The reversal of 18882229 is 92228881.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92228881 = 1559 ⋅59159.

It is a cyclic number.

It is not a de Polignac number, because 18882229 - 2³ = 18882221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18882191 and 18882200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18882221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5917 + ... + 8530.

It is an arithmetic number, because the mean of its divisors is an integer number (4724496).

Almost surely, 2^18882229 is an apocalyptic number.

It is an amenable number.

18882229 is a deficient number, since it is larger than the sum of its proper divisors (15755).

18882229 is a wasteful number, since it uses less digits than its factorization.

18882229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15754.

The product of its digits is 36864, while the sum is 40.

The square root of 18882229 is about 4345.3686840129. The cubic root of 18882229 is about 266.2876878770.

The spelling of 18882229 in words is "eighteen million, eight hundred eighty-two thousand, two hundred twenty-nine".