18041722 has 8 divisors (see below), whose sum is σ = 27722772. Its totient is φ = 8800800.

The previous prime is 18041711. The next prime is 18041753. The reversal of 18041722 is 22714081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17715681 + 326041 = 4209^2 + 571^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109929 + ... + 110092.

Almost surely, 2^18041722 is an apocalyptic number.

18041722 is a deficient number, since it is larger than the sum of its proper divisors (9681050).

18041722 is a wasteful number, since it uses less digits than its factorization.

18041722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220064.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 18041722 is about 4247.5548260146. The cubic root of 18041722 is about 262.2764694204.

The spelling of 18041722 in words is "eighteen million, forty-one thousand, seven hundred twenty-two".