18836229 has 16 divisors (see below), whose sum is σ = 25657344. Its totient is φ = 12289200.

The previous prime is 18836183. The next prime is 18836249. The reversal of 18836229 is 92263881.

It is a happy number.

It is not a de Polignac number, because 18836229 - 2⁷ = 18836101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18836249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40452 + ... + 40914.

It is an arithmetic number, because the mean of its divisors is an integer number (1603584).

Almost surely, 2^18836229 is an apocalyptic number.

It is an amenable number.

18836229 is a deficient number, since it is larger than the sum of its proper divisors (6821115).

18836229 is a wasteful number, since it uses less digits than its factorization.

18836229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728.

The product of its digits is 41472, while the sum is 39.

The square root of 18836229 is about 4340.0724648328. The cubic root of 18836229 is about 266.0712728529.

The spelling of 18836229 in words is "eighteen million, eight hundred thirty-six thousand, two hundred twenty-nine".