18242007 has 16 divisors (see below), whose sum is σ = 28476672. Its totient is φ = 10169280.

The previous prime is 18241997. The next prime is 18242009. The reversal of 18242007 is 70024281.

It is not a de Polignac number, because 18242007 - 2⁴ = 18241991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18242009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9733 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (1779792).

Almost surely, 2^18242007 is an apocalyptic number.

18242007 is a deficient number, since it is larger than the sum of its proper divisors (10234665).

18242007 is a wasteful number, since it uses less digits than its factorization.

18242007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21238.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 18242007 is about 4271.0662603149. The cubic root of 18242007 is about 263.2434290470.

Adding to 18242007 its reverse (70024281), we get a palindrome (88266288).

The spelling of 18242007 in words is "eighteen million, two hundred forty-two thousand, seven".