18419006 has 4 divisors (see below), whose sum is σ = 27628512. Its totient is φ = 9209502.

The previous prime is 18418979. The next prime is 18419017. The reversal of 18419006 is 60091481.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18419006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4604750 + ... + 4604753.

It is an arithmetic number, because the mean of its divisors is an integer number (6907128).

Almost surely, 2^18419006 is an apocalyptic number.

18419006 is a deficient number, since it is larger than the sum of its proper divisors (9209506).

18419006 is an equidigital number, since it uses as much as digits as its factorization.

18419006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209505.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 18419006 is about 4291.7369444084. The cubic root of 18419006 is about 264.0920917621.

The spelling of 18419006 in words is "eighteen million, four hundred nineteen thousand, six".