18040335 has 8 divisors (see below), whose sum is σ = 28864560. Its totient is φ = 9621504.

The previous prime is 18040333. The next prime is 18040387. The reversal of 18040335 is 53304081.

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

It is not a de Polignac number, because 18040335 - 2¹ = 18040333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18040331) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 601330 + ... + 601359.

It is an arithmetic number, because the mean of its divisors is an integer number (3608070).

Almost surely, 2^18040335 is an apocalyptic number.

18040335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18040335 is a deficient number, since it is larger than the sum of its proper divisors (10824225).

18040335 is a wasteful number, since it uses less digits than its factorization.

18040335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202697.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 18040335 is about 4247.3915524708. The cubic root of 18040335 is about 262.2697482071.

The spelling of 18040335 in words is "eighteen million, forty thousand, three hundred thirty-five".