18545349 has 16 divisors (see below), whose sum is σ = 26163200. Its totient is φ = 11652336.

The previous prime is 18545339. The next prime is 18545363. The reversal of 18545349 is 94354581.

It is not a de Polignac number, because 18545349 - 2¹⁹ = 18021061 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18545339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11982 + ... + 13440.

It is an arithmetic number, because the mean of its divisors is an integer number (1635200).

Almost surely, 2^18545349 is an apocalyptic number.

18545349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18545349 is a deficient number, since it is larger than the sum of its proper divisors (7617851).

18545349 is a wasteful number, since it uses less digits than its factorization.

18545349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704.

The product of its digits is 86400, while the sum is 39.

The square root of 18545349 is about 4306.4311210096. The cubic root of 18545349 is about 264.6945525405.

The spelling of 18545349 in words is "eighteen million, five hundred forty-five thousand, three hundred forty-nine".