18266349 has 8 divisors (see below), whose sum is σ = 24416320. Its totient is φ = 12146976.

The previous prime is 18266327. The next prime is 18266363. The reversal of 18266349 is 94366281.

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

It is a de Polignac number, because none of the positive numbers 2^k-18266349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18266309) 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, 6217 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (3052040).

Almost surely, 2^18266349 is an apocalyptic number.

It is an amenable number.

18266349 is a deficient number, since it is larger than the sum of its proper divisors (6149971).

18266349 is a wasteful number, since it uses less digits than its factorization.

18266349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15299.

The product of its digits is 62208, while the sum is 39.

The square root of 18266349 is about 4273.9149500195. The cubic root of 18266349 is about 263.3604670362.

The spelling of 18266349 in words is "eighteen million, two hundred sixty-six thousand, three hundred forty-nine".