18945006 has 8 divisors (see below), whose sum is σ = 37890024. Its totient is φ = 6315000.

The previous prime is 18944977. The next prime is 18945011. The reversal of 18945006 is 60054981.

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

18945006 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578745 + ... + 1578756.

It is an arithmetic number, because the mean of its divisors is an integer number (4736253).

Almost surely, 2^18945006 is an apocalyptic number.

18945006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18945006 is a wasteful number, since it uses less digits than its factorization.

18945006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157506.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 18945006 is about 4352.5861278095. The cubic root of 18945006 is about 266.5824668195.

Adding to 18945006 its reverse (60054981), we get a palindrome (78999987).

The spelling of 18945006 in words is "eighteen million, nine hundred forty-five thousand, six".