18114409 has 8 divisors (see below), whose sum is σ = 18944640. Its totient is φ = 17287776.

The previous prime is 18114407. The next prime is 18114427. The reversal of 18114409 is 90441181.

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 18114409 - 2¹ = 18114407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18114403) 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, 19252 + ... + 20170.

It is an arithmetic number, because the mean of its divisors is an integer number (2368080).

Almost surely, 2^18114409 is an apocalyptic number.

It is an amenable number.

18114409 is a deficient number, since it is larger than the sum of its proper divisors (830231).

18114409 is an equidigital number, since it uses as much as digits as its factorization.

18114409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 18114409 is about 4256.1025598545. The cubic root of 18114409 is about 262.6282197486.

The spelling of 18114409 in words is "eighteen million, one hundred fourteen thousand, four hundred nine".