18214899 has 8 divisors (see below), whose sum is σ = 24307920. Its totient is φ = 12132576.

The previous prime is 18214879. The next prime is 18214909. The reversal of 18214899 is 99841281.

18214899 is nontrivially palindromic in base 11.

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

It is not a de Polignac number, because 18214899 - 2⁷ = 18214771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18214899.

It is not an unprimeable number, because it can be changed into a prime (18214849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3057 + ... + 6765.

It is an arithmetic number, because the mean of its divisors is an integer number (3038490).

Almost surely, 2^18214899 is an apocalyptic number.

18214899 is a deficient number, since it is larger than the sum of its proper divisors (6093021).

18214899 is a wasteful number, since it uses less digits than its factorization.

18214899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349.

The product of its digits is 41472, while the sum is 42.

The square root of 18214899 is about 4267.8916340507. The cubic root of 18214899 is about 263.1129693422.

The spelling of 18214899 in words is "eighteen million, two hundred fourteen thousand, eight hundred ninety-nine".