18009299 has 16 divisors (see below), whose sum is σ = 23431680. Its totient is φ = 13421760.

The previous prime is 18009289. The next prime is 18009323. The reversal of 18009299 is 99290081.

It is not a de Polignac number, because 18009299 - 2¹⁶ = 17943763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18009259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3314 + ... + 6855.

It is an arithmetic number, because the mean of its divisors is an integer number (1464480).

Almost surely, 2^18009299 is an apocalyptic number.

18009299 is a deficient number, since it is larger than the sum of its proper divisors (5422381).

18009299 is a wasteful number, since it uses less digits than its factorization.

18009299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 18009299 is about 4243.7364432773. The cubic root of 18009299 is about 262.1192617890.

The spelling of 18009299 in words is "eighteen million, nine thousand, two hundred ninety-nine".