18184314190249 has 3 divisors (see below), whose sum is σ = 18184318454557. Its totient is φ = 18184309925942.

The previous prime is 18184314190223. The next prime is 18184314190253. The reversal of 18184314190249 is 94209141348181.

The square root of 18184314190249 is 4264307.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 18184314190249 - 2⁹ = 18184314189737 is a prime.

It is a super-3 number, since 3×18184314190249³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18184314190249.

It is not an unprimeable number, because it can be changed into a prime (18184314191249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2132154 + ... + 6396460.

Almost surely, 2^{18184314190249} is an apocalyptic number.

18184314190249 is the 4264307-th square number.

18184314190249 is the 2132154-th centered octagonal number.

It is an amenable number.

18184314190249 is a deficient number, since it is larger than the sum of its proper divisors (4264308).

18184314190249 is an frugal number, since it uses more digits than its factorization.

18184314190249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8528614 (or 4264307 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 18184314190249 in words is "eighteen trillion, one hundred eighty-four billion, three hundred fourteen million, one hundred ninety thousand, two hundred forty-nine".