18441742 has 16 divisors (see below), whose sum is σ = 31766400. Its totient is φ = 7941240.

The previous prime is 18441733. The next prime is 18441743. The reversal of 18441742 is 24714481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18441743) 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, 21642 + ... + 22477.

It is an arithmetic number, because the mean of its divisors is an integer number (1985400).

Almost surely, 2^18441742 is an apocalyptic number.

18441742 is a deficient number, since it is larger than the sum of its proper divisors (13324658).

18441742 is a wasteful number, since it uses less digits than its factorization.

18441742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44151.

The product of its digits is 7168, while the sum is 31.

The square root of 18441742 is about 4294.3849384982. The cubic root of 18441742 is about 264.2007101629.

The spelling of 18441742 in words is "eighteen million, four hundred forty-one thousand, seven hundred forty-two".