18194349 has 4 divisors (see below), whose sum is σ = 24259136. Its totient is φ = 12129564.

The previous prime is 18194333. The next prime is 18194383. The reversal of 18194349 is 94349181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18194349 - 2⁴ = 18194333 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 (18194399) 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, 3032389 + ... + 3032394.

It is an arithmetic number, because the mean of its divisors is an integer number (6064784).

Almost surely, 2^18194349 is an apocalyptic number.

It is an amenable number.

18194349 is a deficient number, since it is larger than the sum of its proper divisors (6064787).

18194349 is an equidigital number, since it uses as much as digits as its factorization.

18194349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064786.

The product of its digits is 31104, while the sum is 39.

The square root of 18194349 is about 4265.4834427061. The cubic root of 18194349 is about 263.0139843268.

The spelling of 18194349 in words is "eighteen million, one hundred ninety-four thousand, three hundred forty-nine".