18323385 has 8 divisors (see below), whose sum is σ = 29317440. Its totient is φ = 9772464.

The previous prime is 18323381. The next prime is 18323419. The reversal of 18323385 is 58332381.

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

It is not a de Polignac number, because 18323385 - 2² = 18323381 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18323381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610765 + ... + 610794.

It is an arithmetic number, because the mean of its divisors is an integer number (3664680).

Almost surely, 2^18323385 is an apocalyptic number.

18323385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18323385 is a deficient number, since it is larger than the sum of its proper divisors (10994055).

18323385 is a wasteful number, since it uses less digits than its factorization.

18323385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221567.

The product of its digits is 17280, while the sum is 33.

The square root of 18323385 is about 4280.5823201990. The cubic root of 18323385 is about 263.6342933394.

The spelling of 18323385 in words is "eighteen million, three hundred twenty-three thousand, three hundred eighty-five".