18718341 has 4 divisors (see below), whose sum is σ = 24957792. Its totient is φ = 12478892.

The previous prime is 18718321. The next prime is 18718351. The reversal of 18718341 is 14381781.

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 a cyclic number.

It is not a de Polignac number, because 18718341 - 2¹⁵ = 18685573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18718321) 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 3 ways as a sum of consecutive naturals, for example, 3119721 + ... + 3119726.

It is an arithmetic number, because the mean of its divisors is an integer number (6239448).

Almost surely, 2^18718341 is an apocalyptic number.

It is an amenable number.

18718341 is a deficient number, since it is larger than the sum of its proper divisors (6239451).

18718341 is an equidigital number, since it uses as much as digits as its factorization.

18718341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239450.

The product of its digits is 5376, while the sum is 33.

The square root of 18718341 is about 4326.4698080537. The cubic root of 18718341 is about 265.5150349159.

It can be divided in two parts, 187 and 18341, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 18718341 in words is "eighteen million, seven hundred eighteen thousand, three hundred forty-one".