18150009 has 16 divisors (see below), whose sum is σ = 24819264. Its totient is φ = 11793600.

The previous prime is 18149983. The next prime is 18150019. The reversal of 18150009 is 90005181.

It is not a de Polignac number, because 18150009 - 2⁷ = 18149881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18150019) 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 15 ways as a sum of consecutive naturals, for example, 33279 + ... + 33819.

It is an arithmetic number, because the mean of its divisors is an integer number (1551204).

Almost surely, 2^18150009 is an apocalyptic number.

It is an amenable number.

18150009 is a deficient number, since it is larger than the sum of its proper divisors (6669255).

18150009 is a wasteful number, since it uses less digits than its factorization.

18150009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 18150009 is about 4260.2827370962. The cubic root of 18150009 is about 262.8001537128.

The spelling of 18150009 in words is "eighteen million, one hundred fifty thousand, nine".