18229066 has 8 divisors (see below), whose sum is σ = 28952100. Its totient is φ = 8578368.

The previous prime is 18229063. The next prime is 18229067. The reversal of 18229066 is 66092281.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14600041 + 3629025 = 3821^2 + 1905^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 536149 = 18229066 / (1 + 8 + 2 + 2 + 9 + 0 + 6 + 6).

It is not an unprimeable number, because it can be changed into a prime (18229063) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268041 + ... + 268108.

Almost surely, 2^18229066 is an apocalyptic number.

18229066 is a deficient number, since it is larger than the sum of its proper divisors (10723034).

18229066 is a wasteful number, since it uses less digits than its factorization.

18229066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536168.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 18229066 is about 4269.5510302607. The cubic root of 18229066 is about 263.1811654467.

The spelling of 18229066 in words is "eighteen million, two hundred twenty-nine thousand, sixty-six".