18806349 has 8 divisors (see below), whose sum is σ = 25116480. Its totient is φ = 12516896.

The previous prime is 18806339. The next prime is 18806353. The reversal of 18806349 is 94360881.

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

It is a cyclic number.

It is not a de Polignac number, because 18806349 - 2²³ = 10417741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18806339) 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, 2904 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (3139560).

Almost surely, 2^18806349 is an apocalyptic number.

It is an amenable number.

18806349 is a deficient number, since it is larger than the sum of its proper divisors (6310131).

18806349 is an equidigital number, since it uses as much as digits as its factorization.

18806349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10339.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 18806349 is about 4336.6287597626. The cubic root of 18806349 is about 265.9305083513.

The spelling of 18806349 in words is "eighteen million, eight hundred six thousand, three hundred forty-nine".