18000046 has 8 divisors (see below), whose sum is σ = 27113760. Its totient is φ = 8962128.

The previous prime is 18000041. The next prime is 18000067. The reversal of 18000046 is 64000081.

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

It is a junction number, because it is equal to n+sod(n) for n = 17999987 and 18000032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000041) 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, 18351 + ... + 19306.

It is an arithmetic number, because the mean of its divisors is an integer number (3389220).

Almost surely, 2^18000046 is an apocalyptic number.

18000046 is a deficient number, since it is larger than the sum of its proper divisors (9113714).

18000046 is a wasteful number, since it uses less digits than its factorization.

18000046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37898.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18000046 is about 4242.6461082678. The cubic root of 18000046 is about 262.0743626690.

The spelling of 18000046 in words is "eighteen million, forty-six", and thus it is an aban number and an uban number.