18067229 has 4 divisors (see below), whose sum is σ = 18175584. Its totient is φ = 17958876.

The previous prime is 18067219. The next prime is 18067241. The reversal of 18067229 is 92276081.

It is a happy number.

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 18067229 - 2¹⁶ = 18001693 is a prime.

It is a super-4 number, since 4×18067229⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18067219) 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, 53927 + ... + 54260.

It is an arithmetic number, because the mean of its divisors is an integer number (4543896).

Almost surely, 2^18067229 is an apocalyptic number.

It is an amenable number.

18067229 is a deficient number, since it is larger than the sum of its proper divisors (108355).

18067229 is a wasteful number, since it uses less digits than its factorization.

18067229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108354.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 18067229 is about 4250.5563165308. The cubic root of 18067229 is about 262.4000115026.

The spelling of 18067229 in words is "eighteen million, sixty-seven thousand, two hundred twenty-nine".