18283906 has 8 divisors (see below), whose sum is σ = 27601020. Its totient is φ = 9083568.

The previous prime is 18283897. The next prime is 18283913. The reversal of 18283906 is 60938281.

It can be written as a sum of positive squares in 2 ways, for example, as 18275625 + 8281 = 4275^2 + 91^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28801 + ... + 29428.

Almost surely, 2^18283906 is an apocalyptic number.

18283906 is a deficient number, since it is larger than the sum of its proper divisors (9317114).

18283906 is a wasteful number, since it uses less digits than its factorization.

18283906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58388.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 18283906 is about 4275.9684283212. The cubic root of 18283906 is about 263.4448177566. Note that the first 3 decimals are identical.

The spelling of 18283906 in words is "eighteen million, two hundred eighty-three thousand, nine hundred six".