18006746 has 8 divisors (see below), whose sum is σ = 28184544. Its totient is φ = 8611900.

The previous prime is 18006743. The next prime is 18006763. The reversal of 18006746 is 64760081.

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

It is not an unprimeable number, because it can be changed into a prime (18006743) 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, 195680 + ... + 195771.

It is an arithmetic number, because the mean of its divisors is an integer number (3523068).

Almost surely, 2^18006746 is an apocalyptic number.

18006746 is a deficient number, since it is larger than the sum of its proper divisors (10177798).

18006746 is a wasteful number, since it uses less digits than its factorization.

18006746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391476.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18006746 is about 4243.4356363682. The cubic root of 18006746 is about 262.1068751862.

The spelling of 18006746 in words is "eighteen million, six thousand, seven hundred forty-six".