18475946 has 8 divisors (see below), whose sum is σ = 28918944. Its totient is φ = 8836300.

The previous prime is 18475931. The next prime is 18475973. The reversal of 18475946 is 64957481.

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 = 18475897 and 18475906.

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, 200780 + ... + 200871.

It is an arithmetic number, because the mean of its divisors is an integer number (3614868).

Almost surely, 2^18475946 is an apocalyptic number.

18475946 is a deficient number, since it is larger than the sum of its proper divisors (10442998).

18475946 is a wasteful number, since it uses less digits than its factorization.

18475946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401676.

The product of its digits is 241920, while the sum is 44.

The square root of 18475946 is about 4298.3655033047. The cubic root of 18475946 is about 264.3639474540.

The spelling of 18475946 in words is "eighteen million, four hundred seventy-five thousand, nine hundred forty-six".