18160055 has 4 divisors (see below), whose sum is σ = 21792072. Its totient is φ = 14528040.

The previous prime is 18160031. The next prime is 18160057. The reversal of 18160055 is 55006181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55006181 = 149 ⋅369169.

It is not a de Polignac number, because 18160055 - 2¹⁶ = 18094519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18160057) 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 3 ways as a sum of consecutive naturals, for example, 1816001 + ... + 1816010.

It is an arithmetic number, because the mean of its divisors is an integer number (5448018).

Almost surely, 2^18160055 is an apocalyptic number.

18160055 is a deficient number, since it is larger than the sum of its proper divisors (3632017).

18160055 is an equidigital number, since it uses as much as digits as its factorization.

18160055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632016.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 18160055 is about 4261.4616037224. The cubic root of 18160055 is about 262.8486312534.

The spelling of 18160055 in words is "eighteen million, one hundred sixty thousand, fifty-five".