18229173 has 8 divisors (see below), whose sum is σ = 24467136. Its totient is φ = 12072000.

The previous prime is 18229157. The next prime is 18229177. The reversal of 18229173 is 37192281.

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

It is not a de Polignac number, because 18229173 - 2⁴ = 18229157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18229177) 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 7 ways as a sum of consecutive naturals, for example, 19668 + ... + 20573.

It is an arithmetic number, because the mean of its divisors is an integer number (3058392).

Almost surely, 2^18229173 is an apocalyptic number.

It is an amenable number.

18229173 is a deficient number, since it is larger than the sum of its proper divisors (6237963).

18229173 is a wasteful number, since it uses less digits than its factorization.

18229173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40395.

The product of its digits is 6048, while the sum is 33.

The square root of 18229173 is about 4269.5635608338. The cubic root of 18229173 is about 263.1816803813.

The spelling of 18229173 in words is "eighteen million, two hundred twenty-nine thousand, one hundred seventy-three".