18019245 has 8 divisors (see below), whose sum is σ = 28830816. Its totient is φ = 9610256.

The previous prime is 18019229. The next prime is 18019271. The reversal of 18019245 is 54291081.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18019245 - 2⁴ = 18019229 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600627 + ... + 600656.

It is an arithmetic number, because the mean of its divisors is an integer number (3603852).

Almost surely, 2^18019245 is an apocalyptic number.

18019245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18019245 is a deficient number, since it is larger than the sum of its proper divisors (10811571).

18019245 is a wasteful number, since it uses less digits than its factorization.

18019245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201291.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18019245 is about 4244.9081262143. The cubic root of 18019245 is about 262.1675064652.

The spelling of 18019245 in words is "eighteen million, nineteen thousand, two hundred forty-five".