18055105 has 16 divisors (see below), whose sum is σ = 23048064. Its totient is φ = 13530880.

The previous prime is 18055099. The next prime is 18055151. The reversal of 18055105 is 50155081.

It is not a de Polignac number, because 18055105 - 2⁹ = 18054593 is a prime.

It is a super-2 number, since 2×18055105² = 651973633122050, which contains 22 as substring.

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 18055105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26094 + ... + 26776.

It is an arithmetic number, because the mean of its divisors is an integer number (1440504).

Almost surely, 2^18055105 is an apocalyptic number.

It is an amenable number.

18055105 is a deficient number, since it is larger than the sum of its proper divisors (4992959).

18055105 is a wasteful number, since it uses less digits than its factorization.

18055105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 18055105 is about 4249.1299109347. The cubic root of 18055105 is about 262.3413039274.

The spelling of 18055105 in words is "eighteen million, fifty-five thousand, one hundred five".