18162105 has 16 divisors (see below), whose sum is σ = 31295040. Its totient is φ = 8941248.

The previous prime is 18162071. The next prime is 18162107. The reversal of 18162105 is 50126181.

It is not a de Polignac number, because 18162105 - 2¹¹ = 18160057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18162107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46375 + ... + 46764.

It is an arithmetic number, because the mean of its divisors is an integer number (1955940).

Almost surely, 2^18162105 is an apocalyptic number.

18162105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18162105 is a deficient number, since it is larger than the sum of its proper divisors (13132935).

18162105 is a wasteful number, since it uses less digits than its factorization.

18162105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93160.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 18162105 is about 4261.7021247384. The cubic root of 18162105 is about 262.8585214478.

Adding to 18162105 its reverse (50126181), we get a palindrome (68288286).

The spelling of 18162105 in words is "eighteen million, one hundred sixty-two thousand, one hundred five".