18106241 has 4 divisors (see below), whose sum is σ = 19171332. Its totient is φ = 17041152.

The previous prime is 18106223. The next prime is 18106271. The reversal of 18106241 is 14260181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16982641 + 1123600 = 4121^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 18106241 - 2⁶ = 18106177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18106211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532520 + ... + 532553.

It is an arithmetic number, because the mean of its divisors is an integer number (4792833).

Almost surely, 2^18106241 is an apocalyptic number.

It is an amenable number.

18106241 is a deficient number, since it is larger than the sum of its proper divisors (1065091).

18106241 is a wasteful number, since it uses less digits than its factorization.

18106241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065090.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 18106241 is about 4255.1428883176. The cubic root of 18106241 is about 262.5887397633.

The spelling of 18106241 in words is "eighteen million, one hundred six thousand, two hundred forty-one".