18141609 has 8 divisors (see below), whose sum is σ = 24295360. Its totient is φ = 12041136.

The previous prime is 18141587. The next prime is 18141623. The reversal of 18141609 is 90614181.

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

It is not a de Polignac number, because 18141609 - 2¹² = 18137513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18141659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12517 + ... + 13890.

It is an arithmetic number, because the mean of its divisors is an integer number (3036920).

Almost surely, 2^18141609 is an apocalyptic number.

It is an amenable number.

18141609 is a deficient number, since it is larger than the sum of its proper divisors (6153751).

18141609 is a wasteful number, since it uses less digits than its factorization.

18141609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26639.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 18141609 is about 4259.2967729427. The cubic root of 18141609 is about 262.7596053044.

The spelling of 18141609 in words is "eighteen million, one hundred forty-one thousand, six hundred nine".