18105974 has 16 divisors (see below), whose sum is σ = 28728000. Its totient is φ = 8534664.

The previous prime is 18105961. The next prime is 18105977. The reversal of 18105974 is 47950181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18105977) 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 7 ways as a sum of consecutive naturals, for example, 7577 + ... + 9675.

It is an arithmetic number, because the mean of its divisors is an integer number (1795500).

Almost surely, 2^18105974 is an apocalyptic number.

18105974 is a deficient number, since it is larger than the sum of its proper divisors (10622026).

18105974 is a wasteful number, since it uses less digits than its factorization.

18105974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 18105974 is about 4255.1115144024. Note that the first 3 decimals coincide. The cubic root of 18105974 is about 262.5874490198.

The spelling of 18105974 in words is "eighteen million, one hundred five thousand, nine hundred seventy-four".