18040334 has 8 divisors (see below), whose sum is σ = 29142120. Its totient is φ = 8326296.

The previous prime is 18040333. The next prime is 18040387. The reversal of 18040334 is 43304081.

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 (18040331) 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, 346904 + ... + 346955.

It is an arithmetic number, because the mean of its divisors is an integer number (3642765).

Almost surely, 2^18040334 is an apocalyptic number.

18040334 is a deficient number, since it is larger than the sum of its proper divisors (11101786).

18040334 is a wasteful number, since it uses less digits than its factorization.

18040334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693874.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 18040334 is about 4247.3914347515. The cubic root of 18040334 is about 262.2697433612.

The spelling of 18040334 in words is "eighteen million, forty thousand, three hundred thirty-four".