18394343 has 12 divisors (see below), whose sum is σ = 20529672. Its totient is φ = 16344720.

The previous prime is 18394331. The next prime is 18394349. The reversal of 18394343 is 34349381.

It is not a de Polignac number, because 18394343 - 2¹⁸ = 18132199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18394349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23921 + ... + 24677.

It is an arithmetic number, because the mean of its divisors is an integer number (1710806).

Almost surely, 2^18394343 is an apocalyptic number.

18394343 is a deficient number, since it is larger than the sum of its proper divisors (2135329).

18394343 is an equidigital number, since it uses as much as digits as its factorization.

18394343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 815 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 18394343 is about 4288.8626697529. The cubic root of 18394343 is about 263.9741662432.

The spelling of 18394343 in words is "eighteen million, three hundred ninety-four thousand, three hundred forty-three".