18406118 has 16 divisors (see below), whose sum is σ = 29072736. Its totient is φ = 8722560.

The previous prime is 18406109. The next prime is 18406153. The reversal of 18406118 is 81160481.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3428 + ... + 6968.

It is an arithmetic number, because the mean of its divisors is an integer number (1817046).

Almost surely, 2^18406118 is an apocalyptic number.

18406118 is a deficient number, since it is larger than the sum of its proper divisors (10666618).

18406118 is a wasteful number, since it uses less digits than its factorization.

18406118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 18406118 is about 4290.2351916882. The cubic root of 18406118 is about 264.0304812525.

Adding to 18406118 its reverse (81160481), we get a palindrome (99566599).

The spelling of 18406118 in words is "eighteen million, four hundred six thousand, one hundred eighteen".