18618045 has 8 divisors (see below), whose sum is σ = 29788896. Its totient is φ = 9929616.

The previous prime is 18617987. The next prime is 18618049. The reversal of 18618045 is 54081681.

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

It is not a de Polignac number, because 18618045 - 2¹⁰ = 18617021 is a prime.

It is a super-3 number, since 3×18618045³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18617997 and 18618015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18618049) 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 7 ways as a sum of consecutive naturals, for example, 620587 + ... + 620616.

It is an arithmetic number, because the mean of its divisors is an integer number (3723612).

Almost surely, 2^18618045 is an apocalyptic number.

18618045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18618045 is a deficient number, since it is larger than the sum of its proper divisors (11170851).

18618045 is a wasteful number, since it uses less digits than its factorization.

18618045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241211.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 18618045 is about 4314.8632655045. The cubic root of 18618045 is about 265.0399607473.

The spelling of 18618045 in words is "eighteen million, six hundred eighteen thousand, forty-five".