18009350 has 12 divisors (see below), whose sum is σ = 33497484. Its totient is φ = 7203720.

The previous prime is 18009323. The next prime is 18009401. The reversal of 18009350 is 5390081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180044 + ... + 180143.

It is an arithmetic number, because the mean of its divisors is an integer number (2791457).

Almost surely, 2^18009350 is an apocalyptic number.

18009350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18009350 is a deficient number, since it is larger than the sum of its proper divisors (15488134).

18009350 is a wasteful number, since it uses less digits than its factorization.

18009350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360199 (or 360194 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 18009350 is about 4243.7424521288. The cubic root of 18009350 is about 262.1195092180.

The spelling of 18009350 in words is "eighteen million, nine thousand, three hundred fifty".