18499946 has 8 divisors (see below), whose sum is σ = 27856224. Its totient is φ = 9214540.

The previous prime is 18499931. The next prime is 18500017. The reversal of 18499946 is 64999481.

It is a happy number.

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 = 18499894 and 18499903.

It is an unprimeable number.

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, 17060 + ... + 18111.

It is an arithmetic number, because the mean of its divisors is an integer number (3482028).

Almost surely, 2^18499946 is an apocalyptic number.

18499946 is a deficient number, since it is larger than the sum of its proper divisors (9356278).

18499946 is a wasteful number, since it uses less digits than its factorization.

18499946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35436.

The product of its digits is 559872, while the sum is 50.

The square root of 18499946 is about 4301.1563561442. The cubic root of 18499946 is about 264.4783663039.

The spelling of 18499946 in words is "eighteen million, four hundred ninety-nine thousand, nine hundred forty-six".