18105474 has 8 divisors (see below), whose sum is σ = 36210960. Its totient is φ = 6035156.

The previous prime is 18105473. The next prime is 18105539. The reversal of 18105474 is 47450181.

It is a sphenic number, since it is the product of 3 distinct primes.

18105474 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18105473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508784 + ... + 1508795.

It is an arithmetic number, because the mean of its divisors is an integer number (4526370).

Almost surely, 2^18105474 is an apocalyptic number.

18105474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18105474 is a wasteful number, since it uses less digits than its factorization.

18105474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017584.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 18105474 is about 4255.0527611300. The cubic root of 18105474 is about 262.5850318630.

The spelling of 18105474 in words is "eighteen million, one hundred five thousand, four hundred seventy-four".