18105045 has 32 divisors (see below), whose sum is σ = 33281280. Its totient is φ = 8232960.

The previous prime is 18105041. The next prime is 18105049. The reversal of 18105045 is 54050181.

It is an interprime number because it is at equal distance from previous prime (18105041) and next prime (18105049).

It is not a de Polignac number, because 18105045 - 2² = 18105041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18105041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27925 + ... + 28565.

It is an arithmetic number, because the mean of its divisors is an integer number (1040040).

Almost surely, 2^18105045 is an apocalyptic number.

18105045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18105045 is a deficient number, since it is larger than the sum of its proper divisors (15176235).

18105045 is a wasteful number, since it uses less digits than its factorization.

18105045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 18105045 is about 4255.0023501756. The cubic root of 18105045 is about 262.5829579070.

The spelling of 18105045 in words is "eighteen million, one hundred five thousand, forty-five".