18005095 has 4 divisors (see below), whose sum is σ = 21606120. Its totient is φ = 14404072.

The previous prime is 18005047. The next prime is 18005101. The reversal of 18005095 is 59050081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59050081 = 19 ⋅3107899.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18005095 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1800505 + ... + 1800514.

It is an arithmetic number, because the mean of its divisors is an integer number (5401530).

Almost surely, 2^18005095 is an apocalyptic number.

18005095 is a deficient number, since it is larger than the sum of its proper divisors (3601025).

18005095 is an equidigital number, since it uses as much as digits as its factorization.

18005095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601024.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 18005095 is about 4243.2410961434. The cubic root of 18005095 is about 262.0988642686.

The spelling of 18005095 in words is "eighteen million, five thousand, ninety-five".