18019006 has 8 divisors (see below), whose sum is σ = 27296424. Its totient is φ = 8920200.

The previous prime is 18019003. The next prime is 18019007. The reversal of 18019006 is 60091081.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18019003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44400 + ... + 44803.

It is an arithmetic number, because the mean of its divisors is an integer number (3412053).

Almost surely, 2^18019006 is an apocalyptic number.

18019006 is a deficient number, since it is larger than the sum of its proper divisors (9277418).

18019006 is a wasteful number, since it uses less digits than its factorization.

18019006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89306.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 18019006 is about 4244.8799747460. The cubic root of 18019006 is about 262.1663473653.

The spelling of 18019006 in words is "eighteen million, nineteen thousand, six".